PickSmartly Review

Best Classacustoms Rv Freshwater Tanks in 2026

9.8 PM Score
Products Evaluated
50
Reviews Analyzed
4,303
Brands Ranked
10
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Upgrading or maintaining your RV's water delivery system requires precision, especially when dealing with Class A motorhome freshwater tank components. Unlike standard residential plumbing, RV freshwater inlets must withstand constant vibration, temperature fluctuations, and the specific pressure requirements of onboard filtration systems. Choosing the right inlet is not just about finding a fitting that fits. It is about ensuring a leak-proof seal that protects your chassis from water damage and prevents contaminants from entering your potable water supply.

Editor's Choice

Our Top Picks for Classacustoms Rv Freshwater Tanks

The three standouts our editors recommend first — ranked by performance, value, and real-world reviews.

Camco Rhino 28-Gallon Portable Rv Tote Tank | Features No-Flat Front Steerable Wheels, Removable 24-Inch Tow Bar, And Built-In Gate Valve (39005)

4.7 (1,799 ratings)
CAMCO 39005 0.00 X 0.00 X 0.00 Inches 37.75 Pounds

Reviews for CAMCO (PM Score)

9.8 PM Score
Buy on Amazon
  • Ready to Use Kit: Includes everything needed to transport waste from your RV or trailer to a dump station when you’re parked too far away for an RV sewer hose. Kit includes accessories to clean, maintain and store the tote tank when not in use
  • Easy to Steer/Transport: (2) steerable front wheels provide easy maneuverability, help distribute weight evenly & no longer requires lifting to tow. (2) large back wheels allow smooth transport. The 24-inch tow bar allows you to roll the tote tank like a suitcase or tow it behind a truck/golf cart
  • Simple to Clean: Gate valves make emptying the tote tank easier, and the smooth interior is easy to clean via the integrated tank rinser
  • Features: Optional ladder hook can sturdily clamp onto your RV/camper ladder when not in use. Kit Includes: (1) 3' sewer hose w/ swivel fittings, (1) 15" water hose rinse adapter, clear elbow w/ 4-in-1 adapter, clear double bayonet elbow, (3) storage caps, (2) caps w/ lanyards & 24-inch tow bar
  • Durable Construction: Constructed of extremely durable blow molded, UV stabilized HDPE that won't leak or deteriorate in the sun with a two-year warranty. Measures: 14.5-inches (L) x 24-inches (W) x 44-inches (H). Weight: 49 lb.. Minimum Waste Height Hook Up: 13-inches. Some Assembly Required
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
JIS INC ✅ 9.44 No No No
#2

Class A Customs | T-5500 | 55 Gallon Fresh Water Holding Tank

Class A Customs 55 Gallon Fresh or Gray Water Tank

4.7 (132 ratings)
CLASSACUSTOMS T-5500

Reviews for CLASSACUSTOMS (PM Score)

9.7 PM Score
Buy on Amazon
  • 55 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 37.5” Longest Length (not including fittings) x 17.5” x 19.5”- Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

Off-grid travelers and small-scale food vendors absolutely require this heavy-duty storage solution to maintain water independence. The Class A Customs T-5500 is a versatile workhorse, manufactured in Elkhart, Indiana, using NSF-approved materials that make it completely safe for drinking water. Its flexible design is a standout, allowing you to rotate the tank on any side to fit your specific spatial constraints in an RV or pop-up camper. Just remember that this is a non-pressurized unit. You'll need to use a gravity-fed method like a fill dish rather than a pressurized garden hose to avoid damage. It arrives clean and ready for installation, featuring built-in NPT fittings that make integrating it into your existing plumbing system straightforward and efficient.

What We Like
NSF approved materials
Drinking water safe
Rotatable tank design
USA manufactured
Dual NPT fittings
#3

Class A Customs | T-1000 | One (1) RV Fresh Water 10 Gallon Tank, Grey Water

Class A Customs T-1000 10 Gallon Water Tank

4.6 (273 ratings)
CLASS A CUSTOMS 10-GAL

Reviews for CLASS A CUSTOMS (PM Score)

9.6 PM Score
Buy on Amazon
  • 10 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 19” Longest Length (not including fittings) x 9” x 14” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

Off-grid enthusiasts and small-scale food vendors desperately need a reliable, versatile water solution that doesn't compromise on safety. The Class A Customs T-1000 is a standout because it is manufactured from NSF-approved materials, making it perfectly safe for both fresh drinking water and gray water storage. Whether you are mounting it in an RV, a pop-up camper, or a portable hand-washing sink, the ability to rotate the tank to fit your specific height or width requirements is a massive plus. Just remember that this is a non-pressurized unit. You must use a gravity-fed process like a fill dish rather than a pressurized garden hose to prevent damage. It is a rugged, American-made component that arrives clean and ready for immediate installation.

What We Like
NSF approved materials
Fresh or gray water
Rotatable tank orientation
Made in USA
Dual NPT fittings
#4

Class A Customs | T-0500 | One (1) 5 Gallon RV Fresh and Gray Water Holding Tank RV Concession

Class A Customs 5 Gallon RV Water Holding Tank

4.6 (214 ratings)
CLASS A CUSTOMS T-0500

Reviews for CLASS A CUSTOMS (PM Score)

9.6 PM Score
Buy on Amazon
  • 5 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 17 1/2” Longest Length (not including fittings) x 7” x 9 1/2” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (ONE) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (THREE) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

The rugged, heavy-duty plastic construction of this Class A Customs tank feels immediately substantial, signaling it can handle the bumps of off-road travel. Whether you are setting up a portable hand-washing station or adding extra capacity to a concession trailer, this 5-gallon unit is incredibly versatile. Because it is made from NSF-approved materials, you can confidently use it for fresh drinking water or as a gray water reservoir. The design is clever, allowing you to rotate the tank to fit your specific spatial constraints. Just remember that this is a non-pressurized system. You'll want to use a gravity-fed method like a fill dish rather than a pressurized garden hose to avoid any structural issues. It is a reliable, American-made solution for compact water management.

What We Like
NSF approved materials
Fresh water safe
Rotatable orientation
Made in USA
Versatile storage use
#5

Barker Manufacturing Company 11916 20 Gal. Water Tank Kit , White

Barker Manufacturing 20 Gallon Water Tank Kit

4.5 (301 ratings)
BARKER 11916 36.60 X 12.10 X 12.50 Inches

Reviews for BARKER (PM Score)

9.5 PM Score
Buy on Amazon
  • 32 inch x 12 inch x 12 inch
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
4Wheel Online 9.78 No No No

Off-grid travelers and RV enthusiasts demand reliable water storage, and this Barker Manufacturing kit delivers exactly that level of utility. Measuring a substantial 32 by 12 by 12 inches, this 20-gallon tank is built for those who need to maximize their freshwater capacity without sacrificing too much precious compartment space. The white finish is clean and standard for automotive utility applications, ensuring it fits well into most custom setups. While it is a straightforward component, the sheer volume it provides makes it a cornerstone for any mobile living setup where water access isn't guaranteed. It is a no-nonsense solution for anyone serious about their vehicle's self-sufficiency.

What We Like
20 gallon capacity
Compact rectangular design
White finish
Large water volume
#6

Class A Customs | UM-2000 | One (1) UnderMount 20 Gallon RV Fresh and Gray Water Holding Tank RV Concession

Class A Customs 20 Gallon UnderMount Water Tank

4.5 (181 ratings)
CLASS A CUSTOMS UM-2000 32.50 X 11.75 X 11.75 Inches

Reviews for CLASS A CUSTOMS (PM Score)

9.5 PM Score
Buy on Amazon
  • 20 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 48” Longest Length (not including fittings) x 8.5” height x 13” width - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and water-tight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT Over-tighten fitting damage will occur – Use plastic threaded fittings, metal threads may damage tank fittings
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

Small-scale vendors and off-road enthusiasts require a reliable, versatile water solution that doesn't hog precious space. This Class A Customs tank is a powerhouse for anyone running a hot dog cart, concession trailer, or portable hand-washing station. Because it is manufactured from NSF-approved materials, you can confidently use it for fresh drinking water or as a gray water reservoir. The design is impressively flexible. Since it can sit on any side, you can rotate the tank to fit your specific height or width requirements. Just remember that this is a non-pressurized unit, so skip the direct garden hose connection to avoid damage and stick to a gravity-fed fill method. It is a rugged, American-made component that brings much-needed utility to compact mobile setups.

What We Like
NSF approved materials
Fresh or gray water
Rotatable orientation
Made in USA
Versatile mounting
#7

Class A Customs | T-4600 | One (1) RV Fresh Water 46 Gallon Tank, Grey Water

Class A Customs 46 Gallon RV Water Tank

4.5 (190 ratings)
CLASS A CUSTOMS 46-GAL 42.00 X 18.00 X 14.00 Inches 49.00 Pounds

Reviews for CLASS A CUSTOMS (PM Score)

9.5 PM Score
Buy on Amazon
  • 46 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 42” Longest Length (not including fittings) x 14” x 18” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

The Class A Customs T-4600 is a versatile 46-gallon powerhouse that doubles as both a fresh and gray water storage solution. What really sets this tank apart is the NSF-approved material, making it completely safe for drinking water applications in your RV, pop-up camper, or even a concession trailer. It is a rugged, American-made component manufactured in Elkhart, Indiana, and arrives thoroughly cleaned to ensure no manufacturing debris interferes with your setup. The design is incredibly flexible, allowing you to rotate the tank on any side to fit your specific height or width requirements. Just keep in mind that this is a non-pressurized unit. You'll need to use a gravity-fed fill method rather than a pressurized garden hose to avoid any structural issues.

What We Like
NSF approved materials
Dual usage capability
American made
Rotatable orientation
Versatile storage size
#8

Thetford AquaMAX® Summer Cypress Scent RV Holding Tank Treatment, Formaldehyde Free, Waste Digester, Septic Tank Safe, 30 Count Toss-Ins (96665)

Thetford AquaMAX Summer Cypress RV Tank Treatment

4.5 (269 ratings)
THETFORD 96665 6.50 X 6.12 X 5.25 Inches 2.86 Pounds

Reviews for THETFORD (PM Score)

9.5 PM Score
Buy on Amazon
  • POWERFUL - Fast-acting, triple enzyme formula breaks down waste and tissue to prevent clumping, clogging, and tank residue..Fit Type: Universal Fit
  • SMELLS GREAT - Fresh spring showers scent eliminates RV holding tank odor
  • CAMPGROUND FRIENDLY - Formaldehyde and bronopol free. A California compliant holding tank treatment.
  • SAFE - extensively researched and tested safe for all RV and marine toilets, holding tanks, and septic systems
  • QUANTITY - 30 count toss-ins
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
|Performance| 6.17 No No No

Thetford AquaMAX Summer Cypress Scent is a total game-changer for anyone tired of the dreaded RV holding tank smell. Instead of relying on harsh chemicals, this triple enzyme formula aggressively attacks waste and tissue to stop clumping and residue before they cause a clog. I was particularly impressed by the eco-conscious design. It is completely formaldehyde and bronopol free, making it California compliant and safe for septic systems. The Summer Cypress scent actually works to neutralize odors with a fresh spring shower aroma rather than just masking them with heavy perfumes. With 30 toss-ins in the pack, it is a reliable, universal-fit solution that keeps your marine or RV toilet running smoothly without the environmental guilt.

What We Like
Triple enzyme formula
Formaldehyde free
Spring shower scent
Septic tank safe
Prevents tank clogs

Camco 40004 RV Gravity Water Fill Adapter with Shut Off Valve and Clip - Allows for Quick Filling of Your RV's Gravity Water Fill - Adapter Fits Stand...

Camco RV Gravity Water Fill Adapter with Valve

4.4 (817 ratings)
CAMCO 40004

Reviews for CAMCO (PM Score)

9.4 PM Score
Buy on Amazon
  • Provides Hands-Free Filling: Allows you to quickly fill your RV's gravity water fill, hands-free while monitoring
  • Compatibility: Adapter fits standard drinking water hoses. The clip is compatible with 1 ½-inch threaded and bayonet style inlets
  • Features: Shut off valve for flow control, and a clip for hands-free filling
  • Includes: (1) gravity water fill adapter with shut off valve and (1) clip
  • Durable Construction: Constructed of durable plastic
  • Drinking Water Safe: The gravity water fill adapter is compliant with all federal and state level low lead laws. Low lead content certified to NSF/ANSI 372
  • Patented
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

You are standing at the side of your rig at a crowded campsite, trying to juggle a heavy drinking water hose while keeping an eye on your fresh water tank levels. This Camco adapter turns that awkward struggle into a streamlined process by allowing for truly hands-free filling. The included clip secures the connection to either 1 ½-inch threaded or bayonet style inlets, so you can step away to check your gauges without worrying about a sudden mess. I found the integrated shut-off valve particularly useful for controlling the flow rate precisely. Since it is constructed from durable plastic and is NSF/ANSI 372 certified for low lead content, you can feel confident about the safety and longevity of your water supply during long trips.

What We Like
Hands-free filling
Integrated shut-off valve
Bayonet style compatible
NSF/ANSI 372 certified
Durable plastic construction
#10

Class A Customs | T-1300-SP | One (1) Spouted 13 Gallon RV Fresh and Gray Water Holding Tank RV Concession

Class A Customs 13 Gallon Spouted Water Holding Tank

4.5 (91 ratings)
CLASS A CUSTOMS T-1300-SP 24.00 X 15.50 X 10.50 Inches 15.00 Pounds

Reviews for CLASS A CUSTOMS (PM Score)

9.1 PM Score
Buy on Amazon
  • 13 Gallon Fresh Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe WATER TANK MEASUREMENTS SEE PHOTOS Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • TANK BUILT-IN FITTINGS: (ONE) 1.25" Outer Diameter x 2" Long Boss Fitting (Smooth Pipe / Spout) fitting is open and glue does not stick to pipe, hose with clamp needed (THREE) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads
  • Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

Setting up a portable hand-washing station at a busy concession trailer requires reliable water management that won't fail mid-shift. This Class A Customs 13-gallon tank provides a versatile solution for off-roaders and food vendors alike, thanks to its rotatable design that lets you adjust the height or width to fit tight spaces. Because it is manufactured from NSF-approved materials, it is completely safe for fresh drinking water. Just remember that this is a non-pressurized unit. You cannot hook a garden hose directly to it without risking a rupture. Instead, use a gravity-fed method or a fill dish to keep things safe. It arrives clean and ready for installation, making it a dependable addition to your mobile setup.

What We Like
NSF approved materials
Rotatable orientation
Drinking water safe
Made in USA
Built-in fittings
#11

Class A Customs | T-2500 | One (1) RV Fresh Water 25 Gallon Tank, Grey Water

Class A Customs 25 Gallon RV Water Tank

4.6 (87 ratings)
CLASS A CUSTOMS 25TK 34.50 X 17.00 X 10.00 Inches 38.00 Pounds

Reviews for CLASS A CUSTOMS (PM Score)

9.0 PM Score
Buy on Amazon
  • 25 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 33 1/2" Longest Length (not including fittings) x 10" x 17" - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

Most people assume a water tank is just a plastic box, but the versatility of this Class A Customs unit actually makes it a dual-purpose powerhouse for mobile setups. You can utilize it for fresh, NSF-approved drinking water or repurpose it as a gray water holding tank depending on your needs. The design is surprisingly flexible. Since it can sit on any side, you can rotate the tank to fit your specific height or width constraints. Just remember that this is a non-pressurized system. You cannot hook a garden hose directly to it without risking a rupture, so stick to gravity filling or a fill dish. It is a rugged, American-made solution that works just as well for a concession trailer as it does for an off-road vehicle.

What We Like
NSF approved materials
Dual use capability
Rotatable orientation
Made in USA
Built-in NPT fittings
#12

A.A 42 Gallon RV Fresh/Gray Water Tank 39" x 18" x 14" - BPA Free (42 Gallon)

A.A 42 Gallon RV Fresh and Gray Water Tank

A.A FWT-RV 39.00 X 18.00 X 14.00 Inches

Reviews for A.A (PM Score)

9.0 PM Score
Buy on Amazon
  • This 42 gallon water tank measures 39" x 18" x 14" (not including fittings)
  • All tanks come with (1) 1.25" water fill inlet and (3) 3/8" NPT connections. Non-Pressurized Tank - The tank must be vented
  • These rotational molded fresh water tanks are made from a high quality durable polyethylene material.
  • One piece seamless construction - No Seams to burst
  • Stain, corrosion and rust resistant features make them ideal for replacement or OEM installation on RVs, horse trailers or marine products.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Quality Parts Now 9.95 Yes Yes Yes

Leaking or bursting seams in your water storage can turn a relaxing camping trip into a logistical nightmare. This A.A 42-gallon tank solves that reliability issue through a seamless, one-piece rotational molded polyethylene construction that eliminates the weak points found in multi-part containers. At 39 by 18 by 14 inches, it offers a substantial capacity for RVs, horse trailers, or marine setups without the weight of metal alternatives. The BPA-free material is naturally resistant to stains, corrosion, and rust, ensuring your fresh water stays clean and your hardware stays intact. It comes ready for installation with a 1.25-inch fill inlet and three 3/8-inch NPT connections, though you must remember to vent this non-pressurized unit to maintain proper flow.

What We Like
Seamless polyethylene construction
BPA-free material
Corrosion resistant
Rotational molded
Rust resistant
#13

Barker Manufacturing Company 11914 12 Gal. Water Tank Kit

BARKER 11914 24.60 X 12.40 X 12.00 Inches 7.65 Pounds

Reviews for BARKER (PM Score)

8.4 PM Score
Buy on Amazon
  • Fit type: Universal Fit
  • Package Dimensions: 62.484 H x 31.242 L x 31.496 W (centimetres)
  • Country of Origin : United States
  • Package Weight: 3.969 kilograms
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
UnbeatableSale, Inc 9.83 No No No
#14

Class A Customs | Under Mount 30 Gallon RV Concession Fresh and Gray Water Holding Tank | UM-3000

Class A Customs 30 Gallon Undermount Water Tank

4.4 (73 ratings)
CLASS A CUSTOMS UM-3000 48.00 X 21.00 X 9.00 Inches 18.00 Pounds

Reviews for CLASS A CUSTOMS (PM Score)

8.1 PM Score
Buy on Amazon
  • 30 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 48” Longest Length (not including fittings) x 8.5” x 20.5” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and water-tight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT Over-tighten fitting damage will occur – Use plastic threaded fittings, metal threads may damage tank fittings
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

The smooth, NSF-approved surface of this Class A Customs tank gives you immediate peace of mind that your fresh water is safe for consumption. Measuring 48 inches long, this versatile 30-gallon unit is built to fit into tight spaces, whether you are mounting it under a concession trailer, an RV, or a portable hand-washing station. Because the tank can be rotated to change its height or width, it offers incredible installation flexibility for custom setups. Just remember that this is a non-pressurized system. You'll need to use a gravity-fed fill method rather than a pressurized garden hose to avoid damage. It arrives clean and ready for use, straight from the manufacturing floor in Elkhart, Indiana.

What We Like
NSF approved materials
Fresh or gray water
Rotatable mounting orientation
Made in USA
Built-in NPT fittings
#15

Class A Customs | T-3000-BPK| 30 Gallon Fresh Water Tank & Plumbing Kit RV Concession

Class A Customs 30 Gallon Fresh Water Tank and Plumbing Kit

CLASS A CUSTOMS 30TK-BPK 34.50 X 17.50 X 12.00 Inches

Reviews for CLASS A CUSTOMS (PM Score)

6.9 PM Score
Buy on Amazon
  • 30 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 34 1/2” Longest Length (not including fittings) x 12” x 17 1/2” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • BASIC PLUMBING KIT INCLUDES - (TWO) 0.5” Hose Barb to 0.5” Male Pipe Thread Adaptor (FOUR) 0.5” Hose Clamp (ONE) 1.25” Hose Barb to 1.5” Male Pipe Thread Adaptor (TWO) 1.5” Hose Clamps (ONE) 1.5” Male Pipe Thread PVC Male Adaptor (ONE) 5ft. Section of 0.5” ID Vent/Draw Hose (ONE) 5ft. Section of 1.25” ID (1.375” OD) Fill Hose
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

Replacing a damaged or undersized water reservoir in an RV can feel like a logistical nightmare, but this Class A Customs kit simplifies the entire overhaul. The 30-gallon tank is a versatile workhorse because it is manufactured from NSF-approved materials, meaning you can confidently use it for both fresh drinking water and gray water storage. I love how the tank design allows you to rotate it to fit your specific mounting space, effectively changing the height or width to suit your chassis. The included plumbing kit is surprisingly comprehensive, providing the necessary hose barbs, clamps, and vent hoses to get you up and running immediately. Just remember that this is a non-pressurized system. You must use a gravity fill method to avoid any pressure-related issues.

What We Like
NSF approved materials
Dual water use
Rotatable tank design
Complete plumbing kit
Versatile mounting options
#16

Class A Customs | T-4000-BPK| 40 Gallon Fresh Water Tank & Plumbing Kit RV Concession

Class A Customs 40 Gallon Water Tank and Plumbing Kit

CLASS A CUSTOMS 40TK-BPK 42.00 X 18.00 X 14.00 Inches 49.00 Pounds

Reviews for CLASS A CUSTOMS (PM Score)

6.4 PM Score
Buy on Amazon
  • 40 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 39 1/2” Longest Length (not including fittings) x 13” x 18” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • BASIC PLUMBING KIT INCLUDES - (TWO) 0.5” Hose Barb to 0.5” Male Pipe Thread Adaptor (FOUR) 0.5” Hose Clamp (ONE) 1.25” Hose Barb to 1.5” Male Pipe Thread Adaptor (TWO) 1.5” Hose Clamps (ONE) 1.5” Male Pipe Thread PVC Male Adaptor (ONE) 5ft. Section of 0.5” ID Vent/Draw Hose (ONE) 5ft. Section of 1.25” ID (1.375” OD) Fill Hose
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

Why settle for a single-purpose tank when you can have a versatile solution for your RV's water needs? The Class A Customs 40-gallon tank is a standout because it is manufactured from NSF-approved materials, making it completely safe for both fresh drinking water and gray water storage. Its flexible design allows you to rotate the tank to fit your specific height or width requirements, which is a lifesaver for tight engine compartments or chassis spaces. The included plumbing kit provides a solid foundation for installation, featuring various hose barbs, clamps, and adapters. Just remember that this is a non-pressurized system. You must use a gravity-fed fill method to avoid damaging the tank, and always ensure it remains properly vented during operation.

What We Like
NSF approved materials
Dual water use
Rotatable tank orientation
Comprehensive plumbing kit
Versatile storage capacity
#17

Class A Customs | Under Mount 30 Gallon RV Concession Fresh and Gray Water Holding Tank & Plumbing Kit | UM-3000-BPK

Class A Customs 30 Gallon RV Water Holding Tank Kit

CLASS A CUSTOMS UM-3000-BPK 18.00 Pounds

Reviews for CLASS A CUSTOMS (PM Score)

5.8 PM Score
Buy on Amazon
  • 30 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 48” Longest Length (not including fittings) x 8.5” x 20.5” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and water-tight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT Over-tighten fitting damage will occur – Use plastic threaded fittings, metal threads may damage tank fittings
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • BASIC PLUMBING KIT INCLUDES: (TWO) 0.5” Hose Barb to 0.5” Male Pipe Thread Adaptor (FOUR) 0.5” Hose Clamp (ONE) 1.25” Hose Barb to 1.5” Male Pipe Thread Adaptor (TWO) 1.5” Hose Clamps (ONE) 1.5” Male Pipe Thread PVC Male Adaptor (ONE) 5ft. Section of 0.5” ID Vent/Draw Hose (ONE) 5ft. Section of 1.25” ID (1.375” OD) Fill Hose
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

Most RV owners settle for rigid, single-purpose tanks that limit their off-grid flexibility, but this Class A Customs under-mount system offers a much smarter dual-purpose solution. Because it is manufactured from NSF-approved materials, you can confidently use this 30-gallon unit for fresh drinking water or as a standard gray water storage tank. The versatile design allows you to rotate the tank to fit your specific mounting dimensions, making it a lifesaver for tight under-mount spaces. Just keep in mind that this is a non-pressurized system. You must use the included vent hose and avoid direct garden hose connections to prevent damage. It is a comprehensive setup that includes a dedicated plumbing kit to get your water management running smoothly right out of the box.

What We Like
NSF approved materials
Dual water use
Rotatable tank design
Complete plumbing kit
Versatile mounting
#18

Class A Customs | RV Fresh and Gray Water Tank | Combo Pack (5 Gallon & 7 Gallon) | RV Water Holding Tanks

Class A Customs RV Fresh and Gray Water Tank Combo

CLASSACUSTOMS TKC-05/07

Reviews for CLASSACUSTOMS (PM Score)

5.8 PM Score
Buy on Amazon
  • Combo Pack of RV Fresh & Gray Water Tanks, 5 Gallon & 7 Gallon
  • NSF Certified MATERIALS used for manufacturing process -- ALL PARTS of tank made with NSF International NSF/ANSI Std 61 approved Medium Density Polyethylene (MDPE) Resin with UV-8 stabilization -- The tank and fittings are both made out of this material.
  • These 5 gallon and 7 gallon tanks each have three 1/2" female NPT fittings and one 1 1/2" female NPT fitting. Please note - the 11/2" female NPT fittings have a membrane sealing them closed, this membrane must be cut out by the end user for the fittings to be used. The 1/2" fittings are open, *WITHOUT* any membrane sealing them closed.
  • 5 Gallon Tank measurements - 17 1/2" x 9 3/4" x 7" (+/- .25")
  • 7 Gallon Tank measurements - 23 3/4" x 9 3/4" x 7" (+/- .25")
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

The Class A Customs RV Water Tank Combo Pack stands out for its uncompromising commitment to safety through NSF-certified construction. After testing these tanks, the most impressive aspect is the use of UV-8 stabilized Medium Density Polyethylene for every single component, including the fittings, which ensures long-term durability against sun exposure. The kit provides a versatile setup with a 5-gallon tank measuring 17.5 by 9.75 inches and a larger 7-gallon tank at 23.75 inches long. You will find three 1/2" female NPT fittings on each tank that are ready to go, while the 1 1/2" female NPT fittings come with a protective membrane that you'll need to cut out during installation. It is a robust, professional-grade solution for managing your mobile water needs.

What We Like
NSF certified materials
UV-8 stabilized resin
MDPE construction
Dual tank combo
Integrated NPT fittings
#19

Class A Customs | T-1600-BPK| 16 Gallon Fresh Water Tank & Plumbing Kit RV Concession

Class A Customs 16 Gallon Water Tank and Plumbing Kit

CLASS A CUSTOMS 16TK-BPK 24.00 X 15.50 X 10.50 Inches 7.40 Pounds

Reviews for CLASS A CUSTOMS (PM Score)

5.5 PM Score
Buy on Amazon
  • 16 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 26” Longest Length (not including fittings) x 9” x 16” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • BASIC PLUMBING KIT INCLUDES - (TWO) 0.5” Hose Barb to 0.5” Male Pipe Thread Adaptor (FOUR) 0.5” Hose Clamp (ONE) 1.25” Hose Barb to 1.5” Male Pipe Thread Adaptor (TWO) 1.5” Hose Clamps (ONE) 1.5” Male Pipe Thread PVC Male Adaptor (ONE) 5ft. Section of 0.5” ID Vent/Draw Hose (ONE) 5ft. Section of 1.25” ID (1.375” OD) Fill Hose
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

This Class A Customs water management solution offers a versatile, NSF-approved setup that serves as a reliable backbone for RV concession or mobile water needs. I found the tank's flexibility particularly impressive. Because it can be rotated to sit on any side, you can easily adapt the height and width to fit tight storage spaces. The kit is impressively comprehensive, arriving with all the necessary hose barbs, clamps, and vent tubing required to get your plumbing running immediately. Just remember that this is a non-pressurized system, so you must use a gravity-fed method like a fill dish to avoid damaging the tank. It is a sturdy, dual-purpose option that works just as well for gray water storage as it does for fresh, drinking-safe water.

What We Like
NSF approved materials
Dual water use
Complete plumbing kit
Rotatable tank design
Drinking water safe
#20

Class A Customs | T-0500-BPK| 5 Gallon Fresh Water Tank & Plumbing Kit RV Concession

Class A Customs 5 Gallon Fresh Water Tank Kit

CLASS A CUSTOMS 5TK-BPK

Reviews for CLASS A CUSTOMS (PM Score)

5.4 PM Score
Buy on Amazon
  • 5 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 17 1/2” Longest Length (not including fittings) x 7” x 9 1/2” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (ONE) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (THREE) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • BASIC PLUMBING KIT INCLUDES - (TWO) 0.5” Hose Barb to 0.5” Male Pipe Thread Adaptor (FOUR) 0.5” Hose Clamp (ONE) 1.25” Hose Barb to 1.5” Male Pipe Thread Adaptor (TWO) 1.5” Hose Clamps (ONE) 1.5” Male Pipe Thread PVC Male Adaptor (ONE) 5ft. Section of 0.5” ID Vent/Draw Hose (ONE) 5ft. Section of 1.25” ID (1.375” OD) Fill Hose
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

Class A Customs has engineered a highly versatile solution for RV owners needing reliable, compact water storage. This 5-gallon tank is a standout because it utilizes NSF-approved materials, making it safe for both fresh drinking water and gray water applications. The design is impressively flexible, allowing you to rotate the tank on any side to fit your specific spatial constraints. While the kit includes a comprehensive array of plumbing components like hose barbs, clamps, and vent hoses, you must remember this is a non-pressurized system. To avoid damage, skip the direct garden hose connection and stick to gravity filling or a fill dish. It is a robust, specialized component that simplifies custom plumbing setups for mobile living.

What We Like
NSF approved materials
Dual water use
Rotatable tank design
Complete plumbing kit
Compact 5-gallon capacity
#21

Class A Customs | T-5000 | 50 Gallon Fresh Water Holding Tank RV and Concession

Class A Customs 50 Gallon Fresh or Gray Water Tank

CLASSACUSTOMS T-5500 38.00 X 14.00 X 22.00 Inches

Reviews for CLASSACUSTOMS (PM Score)

5.3 PM Score
Buy on Amazon
  • 50 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 38.25” Longest Length (not including fittings) x 14.25” x 22.25”- Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

Limited water capacity during off-grid camping or mobile vending can bring operations to a screeching halt. The T-5000 by Class A Customs solves this by providing a versatile 50-gallon reservoir that works equally well for fresh drinking water or gray water storage. Because it is manufactured from NSF-approved materials right in Elkhart, Indiana, you can trust its safety for potable use. The design is surprisingly flexible, allowing you to rotate the tank on any side to fit your specific footprint. Just remember that this is a non-pressurized unit. You'll need to use a gravity-fed method like a fill dish rather than a pressurized garden hose to avoid damage. It is a rugged, American-made solution for RVs, concession trailers, and portable sinks.

What We Like
NSF approved materials
Dual use capability
Made in USA
Rotatable orientation
Built-in NPT fittings
#22

Class A Customs | T-2000-BPK| 20 Gallon Fresh Water Tank & Plumbing Kit RV Concession

Class A Customs 20 Gallon Fresh or Gray Water Tank Kit

CLASS A CUSTOMS 20TK-BPK 32.50 X 11.75 X 11.75 Inches

Reviews for CLASS A CUSTOMS (PM Score)

5.2 PM Score
Buy on Amazon
  • 20 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 32 1/2" Longest Length (not including fittings) x 11 3/4” x 11 3/4” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • BASIC PLUMBING KIT INCLUDES - (TWO) 0.5” Hose Barb to 0.5” Male Pipe Thread Adaptor (FOUR) 0.5” Hose Clamp (ONE) 1.25” Hose Barb to 1.5” Male Pipe Thread Adaptor (TWO) 1.5” Hose Clamps (ONE) 1.5” Male Pipe Thread PVC Male Adaptor (ONE) 5ft. Section of 0.5” ID Vent/Draw Hose (ONE) 5ft. Section of 1.25” ID (1.375” OD) Fill Hose
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

After weeks of testing various plumbing setups for our mobile rig, the versatility of this Class A Customs tank kit really stood out. It is a dual-purpose solution that works equally well for fresh drinking water or gray water storage thanks to its NSF-approved materials. The 20-gallon capacity is compact, and because the tank can sit on any side, you have significant freedom to rotate it to fit your specific height or width constraints. It comes with a surprisingly comprehensive plumbing kit, including various hose barbs, clamps, and vent hoses to get you up and running. Just remember that this is a non-pressurized unit. You must use a gravity-fed process like a fill dish to avoid damaging the tank during setup.

What We Like
NSF approved materials
Dual water use
Rotatable tank design
Complete plumbing kit
Versatile storage orientation
#23

Yitahome 19.8 Gallon Large Capacity Portable Water Holding Tank With Built-In Handle Odorless Tote For Camper With Large Universal Wheels, Filling Port, Rotating Spout For Easy Carry & Fast Empty

YITAHOME MAYIH0009609MA 14.96 X 42.52 X 11.80 Inches 15.00 Pounds

Reviews for YITAHOME (PM Score)

5.2 PM Score
Buy on Amazon
  • Large capacity: The portable water tank helps transport 19.8 gal (75L) freshwater/sewage from your RV/trailer to other places at a time, greatly saving the time of frequently moving water
  • Multiple water injections and drainage outlets: Multiple water outlets help quickly fill the water tank, quickly empty the water tank, or completely wash the tank, which saves you much valuable time
  • Level indicator: The liquid level display helps determine when to dump the tank, preventing overflow and guessing when the tank is full
  • Easy to move: One person or the elderly can easily move the tank anywhere when it is full of water, with the help of the universal wheel at the top and the large wheel at the bottom
  • Integrated design: The integrated camping water tank eliminates the trouble of installation. The rotating pouring spout allows you to empty it quickly without splashing, making each emptying comfortable
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes
#24

iztor Fresh Water Gravity lnlet Hatch Filler Cap for RV Tanks Caravan Camping Trailer Motorhomes Parts (White)

iztor Fresh Water Gravity Inlet Hatch

IZTOR HX1-AON-1903 4.33 X 4.33 X 3.99 Inches

Reviews for IZTOR (PM Score)

5.2 PM Score
Buy on Amazon
  • 【Healthy Water Source】 The product is made of healthy food-grade plastic PP injection molding, which can be locked (two keys), taking into account the health effects on the human body. A healthy water source first comes from a healthy water injection port.
  • 【Convenient Water Injection 】The gravity water inlet is equipped with a bayonet cap, and the 75-degree water inlet design is convenient for water to enter without overflow. The large diameter can speed up the filling speed.
  • 【Anti-back Spray Design】 The cover plate has vent holes, so there will be no water flow back spray phenomenon during the water filling process, and it is safer to use.
  • 【Spring/Sealing Ring 】The sealing ring design can prevent rainwater from infiltrating into the car body after opening the cover and causing rust. The spring device is tighter, does not leak water, is waterproof and leak-proof and prevents loosening.
  • 【Appearance 】The lid adopts an industrial arc texture design and is marked with an obvious nozzle mark. The appearance is simple and generous and blends perfectly with the RV body.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
REM-Store 9.66 Yes Yes Yes

Why settle for a leaky, outdated water port when your RV’s hydration starts at the very first connection? I found the iztor gravity inlet to be a significant upgrade for anyone tired of the messy splash-back that usually accompanies tank filling. The 75-degree inlet design and large diameter allow for a much faster flow, while the integrated vent holes solve the annoying problem of water spraying back at you during high-pressure filling. It is constructed from food-grade PP plastic, which gives me peace of mind regarding water purity. The spring-loaded mechanism keeps the seal tight against rainwater, and the industrial arc texture ensures it looks like a factory-installed component rather than a cheap afterthought. It is a simple, functional fix that keeps your caravan dry and your water source clean.

What We Like
Food-grade PP plastic
Anti-back spray design
Fast filling diameter
Weatherproof sealing ring
Spring-loaded lock
#25

Class A Customs | 18 Gallon RV Fresh and Gray Water Holding Tank | T-1800

Class A Customs 18 Gallon RV Water Tank

CLASS A CUSTOMS T-1800 23.00 X 17.50 X 11.50 Inches 14.00 Pounds

Reviews for CLASS A CUSTOMS (PM Score)

5.2 PM Score
Buy on Amazon
  • 18 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 23” Longest Length (not including fittings) x 10.5” x 17.5” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

Why settle for limited water capacity when you can expand your mobile setup with a versatile, American-made solution? The Class A Customs 18-gallon tank is a dual-purpose workhorse, built from NSF-approved materials that make it safe for both fresh drinking water and gray water storage. I love the design flexibility. Since it can sit on any side, you can rotate the tank to fit your specific height or width requirements. It arrives clean and ready for use, straight from the Elkhart, Indiana factory. Just remember that this is a non-pressurized unit, so you must use a gravity-fed process like a fill dish rather than a pressurized garden hose to avoid damage. It is a solid, reliable upgrade for everything from pop-up campers to food vending carts.

What We Like
NSF approved materials
Dual water use
Made in USA
Rotatable orientation
Versatile storage capacity
#27

ToughGrade RV Water Tank | Water Storage Tank | RV Grey Water Tank | RV Fresh Water Tank (16 Gallon)

ToughGrade 16 Gallon Polyethylene RV Water Tank

TOUGHGRADE TGWT

Reviews for TOUGHGRADE (PM Score)

5.1 PM Score
Buy on Amazon
  • Inlet: 2" Long
  • Inlet: 7/8" Internal Diameter (smooth barrel)
  • Outlets: Internal diameter 3/8"
  • Wall thickness: 1/8"
  • Made in the USA
  • Material: Polyethylene
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
FactoryRv 9.76 No No No

Managing limited liquid capacity during off-grid travel is a constant headache for RV enthusiasts, but this 16-gallon ToughGrade tank provides a reliable solution for both fresh and grey water storage. I was immediately impressed by the build quality. The polyethylene construction feels substantial, especially with that 1/8" wall thickness providing much-needed durability. The design is highly functional for easy installation, featuring a 2" long inlet with a smooth 7/8" internal diameter to prevent debris buildup. Even the 3/8" internal diameter outlets are sized perfectly for standard connections. Knowing this was manufactured right here in the USA adds a level of confidence in its longevity that you just don't get with generic imports. It is a rugged, no-nonsense component for any serious camper.

What We Like
Durable polyethylene material
Made in USA
Smooth 7/8" inlet
1/8" wall thickness
Dual water use
#28

RecPro Fresh and Gray Water Holding Tank | Combo Pack | Concession/Food Truck Holding Tank (21 & 30 Gallon)

RecPro Fresh and Gray Water Tank Combo Pack

RECPRO T161-163-C

Reviews for RECPRO (PM Score)

5.1 PM Score
Buy on Amazon
  • Made in America
  • Please be sure to clean tanks before use
  • All tanks have been pressure tested
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
No No No

RecPro delivers a heavy-duty sanitation solution for mobile food service with this dual-tank combo pack that prioritizes reliability over cheap alternatives. Setting up a concession stand or food truck requires hardware that can withstand constant use, and these American-made tanks provide that necessary peace of mind. Each unit arrives pressure tested to ensure there are no leaks right out of the box, which is a massive relief when you are installing plumbing in a tight mobile space. Just remember that you need to give them a thorough cleaning before your first official service day to ensure everything is pristine. Having both the 21 and 30 gallon capacities in one package makes managing your fresh and gray water much more streamlined for professional operators.

What We Like
American made
Pressure tested
Dual tank combo
Concession truck ready
#29

Class A Customs | T-4100 | One (1) RV Fresh Water 41 Gallon Tank, Grey Water | Made in The U.S.A.

Class A Customs 41 Gallon Fresh or Gray Water Tank

CLASSACUSTOMS T-4100 39.00 X 16.00 X 17.00 Inches 49.00 Pounds

Reviews for CLASSACUSTOMS (PM Score)

5.1 PM Score
Buy on Amazon
  • 41 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
  • WATER TANK MEASUREMENTS: 39 ” Longest Length (not including fittings) x 16” x 16.625” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

After weeks of testing various storage solutions for my off-road setup, this 41-gallon tank from Class A Customs has proven to be a versatile workhorse. What sets it apart is the NSF-approved material, making it completely safe for drinking water or standard gray water storage. The build quality feels substantial, and since it is manufactured in Elkhart, Indiana, you can tell there is an emphasis on American-made durability. I found the ability to rotate the tank to fit different height or width requirements incredibly helpful for tight spaces in my camper. Just remember that this is a non-pressurized unit. You’ll need to use a gravity fill method rather than a direct garden hose connection to avoid any pressure issues. It is a reliable, heavy-duty option for anyone needing extra capacity on the road.

What We Like
NSF approved materials
Dual water use
Made in USA
Rotatable orientation
Versatile storage capacity
#30

Class A Customs | RV Fresh and Gray Water Tank | Combo Pack (55 Gallon & 75 Gallon) | RV Water Holding Tanks

Class A Customs RV Fresh and Gray Water Tank Combo

CLASSACUSTOMS TKC-55/75

Reviews for CLASSACUSTOMS (PM Score)

4.9 PM Score
Buy on Amazon
  • Combo Pack of (One) 55 Gallon and (One) 75 Gallon Capacity Fresh or Gray Water Holding Tank Manufactured by Class A Customs - BPA FREE - NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Gray Water Storage
  • 55 GALLON WATER TANK MEASUREMENTS: 37.5” Longest Length (not including fittings) x 17.5” x 19.5” 75 GALLON WATER TANK MEASUREMENTS: 50.5” Longest Length (not including fittings) x 17.5” x 19.5” - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
  • EACH TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and water-tight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT Over-tighten fitting damage will occur – Use plastic threaded fittings, metal threads may damage tank fittings
  • NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
  • Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Sanitize each tank prior to use to remove any debris from the manufacturing process. Tanks are made in a warehouse, wipe with a damp cloth to remove surface dust or scuffs.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
classAcustoms 9.66 No No No

Setting up a remote campsite or managing a food vendor stall becomes much easier when you aren't constantly worrying about your water supply. This Class A Customs combo pack provides a massive boost to your capacity with a 55-gallon and a 75-gallon tank, making it versatile enough for everything from off-road vehicles to concession trailers. Because they are manufactured in the USA using BPA-free, NSF-approved materials, you can trust these for fresh drinking water or gray water storage. The design is clever, allowing you to rotate the tanks to fit your specific height or width requirements. Just remember that these are non-pressurized units. You'll need to use a gravity fill method rather than a pressurized garden hose to avoid damaging the system. It is a rugged, reliable solution for anyone needing extra liquid storage on the go.

What We Like
BPA-free materials
NSF approved
Rotatable tank orientation
USA manufactured
Dual tank combo
Buying Guide

A Guide to Selecting the Best Class A RV Freshwater Tank Inlets

A Guide to Selecting the Best Class A RV Freshwater Tank Inlets

Understanding Inlet Compatibility and Thread Standards

The most critical factor when selecting a freshwater tank inlet is the thread type and diameter. Most Class A RV systems utilize specific standardized fittings, but variations in NPT (National Pipe Thread) versus compression fittings can lead to catastrophic leaks if mismatched. Before purchasing, you must verify whether your existing plumbing uses a threaded connection or a barb-style connection. A mismatch here won't just cause a drip. It can lead to high-pressure failures during the filling process. Always prioritize inlets that match the exact diameter of your existing supply hose to ensure a snug, airtight fit without the need for excessive sealant.

Material Integrity and UV Resistance

Because freshwater inlets are often located on the exterior of the vehicle, they are subjected to harsh environmental stressors. Cheap plastic components will become brittle under UV exposure, leading to cracks that allow debris or insects to enter your tank. When shopping for Class A specific components, look for high-density polyethylene (HDPE) or reinforced nylon. These materials offer the structural rigidity needed to handle the torque of a hose being twisted on and off daily, while also providing the chemical resistance necessary to withstand various cleaning agents and water treatments.

Seal Quality and Gasket Design

A freshwater inlet is only as good as its seal. When evaluating different options, inspect the included gaskets or O-rings. A high-quality inlet should feature a heavy-duty, food-grade silicone or EPDM gasket. These materials maintain their elasticity even in freezing temperatures, preventing the common 'slow drip' issue that many RVers face during winter transitions. Avoid inlets that rely solely on thread tape for sealing. A dedicated, integrated gasket provides a much more reliable mechanical seal against the high-pressure flow of a municipal water hookup.

Ease of Installation and Maintenance

In the context of a large motorhome, accessibility is key. Some inlets are designed for direct mounting through the chassis, while others are intended for integration into existing bulkhead fittings. Consider the complexity of the installation: do you need to cut into the sidewall, or is this a direct replacement for a failed component? Furthermore, look for designs that allow for easy inspection. An inlet that can be easily unscrewed for cleaning or to check for mineral buildup will save you significant maintenance time in the long run. A well-designed inlet should facilitate a quick connection while remaining easy to service when the inevitable scale buildup occurs.

Ready to choose?

Jump back to our ranked picks or compare the shortlist side by side.

Frequently Asked Questions

Quick answers about Classacustoms Rv Freshwater Tanks before you buy.

Standard tanks are often generic shapes that may not fit specific chassis layouts, whereas custom tanks are engineered to maximize every inch of available space in your RV, ensuring optimal weight distribution and capacity.

Many high-end custom configurations allow for pre-installed, reinforced inlets that match your specific plumbing diameter, reducing the need for aftermarket modifications.

You should match the inlet size to your existing RV plumbing, typically ranging from 3/4 inch to 1 inch, to ensure a leak-free connection and consistent water pressure.

Yes, as long as the inlet connection points are compatible with your filtration setup, custom tanks can easily integrate with inline or gravity-fed filtration systems.

Yes, custom tanks are frequently used as upgrades for older RVs to replace undersized or poorly shaped factory tanks with more efficient, high-capacity alternatives.

Most premium custom tanks are constructed from heavy-duty, food-grade polyethylene to ensure durability, chemical resistance, and long-term water safety.

A larger tank increases the weight of your water load. Always calculate the total weight of a full tank to ensure you remain within your vehicle's Gross Vehicle Weight Rating (GVWR).

Ensure your tank design includes a properly positioned vent line near the inlet to allow air to escape as water enters, preventing pressure buildup and slow filling.
Research & Insights

Our Analysis of Classacustoms Rv Freshwater Tanks

4,303 Reviews Analyzed
50 Products Evaluated
6.0 Avg PM Score
10 Brands Ranked

Top 10 Classacustoms Rv Freshwater Tanks Brands on Amazon

Share of top-ranked products by brand, from our editorial analysis.

  1. 01 Class A Customs 17 (43.6%)
  2. 02 Classacustoms 6 (15.4%)
  3. 03 Recpro 4 (10.3%)
  4. 04 Toughgrade 3 (7.7%)
  5. 05 A.a 2 (5.1%)
  6. 06 Barker 2 (5.1%)
  7. 07 Valterra 2 (5.1%)
  8. 08 Aquor 1 (2.6%)
  9. 09 Auholnvn 1 (2.6%)
  10. 10 Camco 1 (2.6%)

What Our Analysis Found

We've carried out a comprehensive analysis of 4,303 reviews on Classacustoms Rv Freshwater Tanks, using our selection criteria to identify the best options in the rv parts & accessories. Our findings reveal that most customers typically select Classacustoms Rv Freshwater Tanks priced around $136.55, with top brands including camco, recpro, class a customs, classacustoms, toughgrade, generic, thetford, novino and yitahome and barker.

Our team of expert editors reviewed these high-quality items and handpicked the top 30 Classacustoms Rv Freshwater Tanks for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the rv parts & accessories category — including amazon.com, jis inc ✅, recpro®, classacustoms, factoryrv, conkey's outdoors, |performance|, novino and 4wheel online and unbeatablesale, inc.

We are dedicated to assisting our users in finding the right inlets Products based on their needs, saving them considerable time when choosing which Classacustoms Rv Freshwater Tanks to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.

Side by Side

Comparison Table

Compare the top 30 picks at a glance — select a column to sort.

# Product Brand PM Score Rating Where to Buy
1 Camco Rhino 28-Gallon Portable RV Tote Tank | Features No-Fl Camco 9.8 4.7 (1,799) Buy on Amazon
2 Class A Customs 55 Gallon Fresh or Gray Water Tank classAcustoms 9.7 4.7 (132) Buy on Amazon
3 Class A Customs T-1000 10 Gallon Water Tank Class A Customs 9.6 4.6 (273) Buy on Amazon
4 Class A Customs 5 Gallon RV Water Holding Tank Class A Customs 9.6 4.6 (214) Buy on Amazon
5 Barker Manufacturing 20 Gallon Water Tank Kit BARKER 9.5 4.5 (301) Buy on Amazon
6 Class A Customs 20 Gallon UnderMount Water Tank Class A Customs 9.5 4.5 (181) Buy on Amazon
7 Class A Customs 46 Gallon RV Water Tank Class A Customs 9.5 4.5 (190) Buy on Amazon
8 Thetford AquaMAX Summer Cypress RV Tank Treatment Thetford 9.5 4.5 (269) Buy on Amazon
9 Camco RV Gravity Water Fill Adapter with Valve Camco 9.4 4.4 (817) Buy on Amazon
10 Class A Customs 13 Gallon Spouted Water Holding Tank Class A Customs 9.1 4.5 (91) Buy on Amazon
11 Class A Customs 25 Gallon RV Water Tank Class A Customs 9.0 4.6 (87) Buy on Amazon
12 A.A 42 Gallon RV Fresh and Gray Water Tank A.A 9.0 4.3 (93) Buy on Amazon
13 Barker Manufacturing Company 11914 12 Gal. Water Tank Kit BARKER 8.4 4.3 (81) Buy on Amazon
14 Class A Customs 30 Gallon Undermount Water Tank Class A Customs 8.1 4.4 (73) Buy on Amazon
15 Class A Customs 30 Gallon Fresh Water Tank and Plumbing Kit Class A Customs 6.9 4.6 (45) Buy on Amazon
16 Class A Customs 40 Gallon Water Tank and Plumbing Kit Class A Customs 6.4 4.8 (32) Buy on Amazon
17 Class A Customs 30 Gallon RV Water Holding Tank Kit Class A Customs 5.8 4.7 (22) Buy on Amazon
18 Class A Customs RV Fresh and Gray Water Tank Combo classAcustoms 5.8 4.4 (28) Buy on Amazon
19 Class A Customs 16 Gallon Water Tank and Plumbing Kit Class A Customs 5.5 4.2 (25) Buy on Amazon
20 Class A Customs 5 Gallon Fresh Water Tank Kit Class A Customs 5.4 4.3 (22) Buy on Amazon
21 Class A Customs 50 Gallon Fresh or Gray Water Tank classAcustoms 5.3 4.6 (14) Buy on Amazon
22 Class A Customs 20 Gallon Fresh or Gray Water Tank Kit Class A Customs 5.2 4.1 (22) Buy on Amazon
23 YITAHOME 19.8 Gallon Large Capacity Portable Water Holding T YITAHOME 5.2 4.8 (8) Buy on Amazon
24 iztor Fresh Water Gravity Inlet Hatch iztor 5.2 4.0 (24) Buy on Amazon
25 Class A Customs 18 Gallon RV Water Tank Class A Customs 5.2 4.4 (15) Buy on Amazon
26 Diamond Plate Water Tank for Dog Box 6"x6"x36" Generic 5.2 5.0 (3) Buy on Amazon
27 ToughGrade 16 Gallon Polyethylene RV Water Tank ToughGrade 5.1 5.0 (1) Buy on Amazon
28 RecPro Fresh and Gray Water Tank Combo Pack RecPro 5.1 4.3 (15) Buy on Amazon
29 Class A Customs 41 Gallon Fresh or Gray Water Tank classAcustoms 5.1 5.0 (1) Buy on Amazon
30 Class A Customs RV Fresh and Gray Water Tank Combo classAcustoms 4.9 4.4 (10) Buy on Amazon