Best Blue Cartridge Pool Filters in 2026
Daisy
Last Updated: Jul 19, 2026
Daisy
Last Updated: Jul 19, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FilterDeal | 9.91 | ✅ | ✅ | ✅ |
✅ REPLACEMENT FILTER - Get purer, cleaner water in your pool or spa with these replacement cartridge filters compatible for Unicel C-4325, C-4326, Filbur FC-2390, and Pleatco PRB50-IN and PRB68. See below for alternative filter names.
✅ DIMENSIONS - This replacement pool filter cartridge has an open 2 1/8 inch (2.125") top, 2 1/8 inch (2.125") open hole bottom, 5 inch (5") diameter and 13 5/16 inch (13.3125") length. The filter material is made of USA made premium spunbond trilobal filter material for better filtration.
✅ MULTI PACK SAVINGS - Choose from our value savings single, double or 4 pack filter bundle. Having multiple filters on hand can help extend the life of each and protects your pool or spa because you can keep 1 filter active while cleaning the other for zero filtration downtime.
✅ EASY TO CLEAN - Guardian Filtration Products are designed to be long lasting and easy to clean so you can keep your pool and spa crystal clear and safe for you and your family. Our premium filter material keeps your water clearer and is easier to clean.
✅ Guardian Filtration Products has been operating out of Northwest Pennsylvania since 2003. We're committed to creating affordable, high quality pool filtration products and accessories...Click Add-to-Cart or 1-Click Buy to order your pool/spa filter cartridge today!
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FilterDeal | 9.91 | ✅ | ✅ | ✅ |
✅ Filters May Be Green or Blue ✅ REPLACEMENT FILTER - Get purer, cleaner water in your pool or spa with these replacement cartridge filters compatible for Unicel C-4325, C-4326, Filbur FC-2390, and Pleatco PRB50-IN and PRB68. See below for alternative filter names. Filters May Be Green or Blue
✅ DIMENSIONS - This replacement pool filter cartridge has an open 2 1/8 inch (2.125") top, 2 1/8 inch (2.125") open hole bottom, 5 inch (5") diameter and 13 5/16 inch (13.3125") length. The filter material is made of USA made premium spunbond trilobal filter material for better filtration.
✅ MULTI PACK SAVINGS - Choose from our value savings single, double or 4 pack filter bundle. Having multiple filters on hand can help extend the life of each and protects your pool or spa because you can keep 1 filter active while cleaning the other for zero filtration downtime.
✅ EASY TO CLEAN - Guardian Filtration Products are designed to be long lasting and easy to clean so you can keep your pool and spa crystal clear and safe for you and your family. Our premium filter material keeps your water clearer and is easier to clean.
✅ Guardian Filtration Products has been operating out of Northwest Pennsylvania since 2003. We're committed to creating affordable, high quality pool filtration products and accessories...Click Add-to-Cart or 1-Click Buy to order your pool/spa filter cartridge today!
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
POWERFUL FILTRATION PERFORMANCE: Innovated "Dirt-Locking" technology make the polyester fabric traps much more contaminants than regular fabric. This filter efficiently removes hair, leaves, dust, sediment, sand, etc. Enjoy your spa and hot tub
EASY TO CLEAN: Uniformity trilobal fabric make it easier to capture and release stains, easy to wash it after use. It is recommended that you replace cartridges 1 week for everyday use and 4 weeks for use frequently to maximize your spa's performance
KEEP THE WATER FRESH: This massage pool filter is sure to keep your pure spa jet massage water clean and fresh. This replacement filter cartridge can be used in place of your PM_SPA-P154 Spa filter and apply to most massage pools
SMALL FOR CARRYING AND STORAGE EASILY: This filter's size is 4''x4''x3'',0.18 pounds, it's compact size so that it's easy for carrying and storage. Note: Make sure this fits by entering your model number before you buy
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
☑️Direct Pool Filter Cartridge Replacement for: C-7472-4, FC-6475, 817-0143, 178585, R173578. Also works with the following: Pentair Clean & Clear Plus 520, Waterway Crystal Water
☑️Specifications: DIAMETER: 7", 177.8 mm, LENGTH: 32", 812.8 mm, TOP HOLE SIZE: 3", 76.2 mm, BOTTOM HOLE SIZE: 3", 76.2 mm, MEDIA SQUARE FEET: 520, MEDIA WEIGHT: 4 oz.
☑️Featuring: Reinforced Center Cores, Super-Bond Bands, Break Resistant End Caps and Pleatco Smart Tracker Time Stamping
☑️PleatcoPure: Free Flow Core for Maximum Water Flow Paired with Pleatco Advanced Filtration 4 Oz. Fabrics that are Uniformly Point Bonded with the Highest Fiber Count in the Industry
☑️US Designed and Engineered to provide the cleanest water filtration possible for the health, safety and happiness of every pool and spa owner
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FilterDeal | 9.85 | ✅ | ✅ | ✅ |
✅ Filters May Be Green or Blue ✅ REPLACEMENT FILTER - Get purer, cleaner water in your pool or spa with these replacement cartridge filters compatible for Pleatco PRB50IN, Unicel C-4950, Filbur FC-2390. Filters May Be Green or Blue
✅ DIMENSIONS - This replacement pool filter cartridge has an open 2 1/8 inch (2.125") top, 2 1/8inch (2.125") open hole bottom, 4 15/16 to 5 inches diameter and 13 5/16 inch (3.3125") length. The filter material is premium spunbond trilobal filter material for better filtration.
✅ MULTI PACK SAVINGS - Choose from our value savings single, double or 4 pack filter bundle. Having multiple filters on hand can help extend the life of each and protects your pool or spa because you can keep 1 filter active while cleaning the other for zero filtration downtime.
✅ EASY TO CLEAN - Guardian Filtration Products are designed to be long lasting and easy to clean so you can keep your pool and spa crystal clear and safe for you and your family. Our premium filter material keeps your water clearer and is easier to clean.
✅ Guardian Filtration Products has been operating out of Northwest Pennsylvania since 2003. We're committed to creating affordable, high quality pool filtration products and accessories...Click Add-to-Cart or 1-Click Buy to order your pool/spa filter cartridge today!
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Pool Supplies Superstore | 9.82 | ❌ | ❌ | ❌ |
☑️Direct DE Grid Filter Replacement for: FG-1002, FC-9320. Also works with the following: Hayward, Pentair, American, Jacuzzi, Pac-Fab, Sta-Rite, Astral - Universal Full Grid
☑️Specifications: LENGTH: 12", OUTER DIAMETER: 11", MEDIA SQUARE FEET: 24
☑️MATERIAL: Woven polypropylene resins to assure the highest strength and to maximize filtration. Chemical resistant 4-ply thread on all seams. Over-stitched bottom seam.
☑️FRAME: Lightweight with reinforced center tube for greater flow coverage and unique snap lock frame.
☑️US Designed and Engineered to provide the cleanest water filtration possible for the health, safety and happiness of every pool and spa owner
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Guardian Filtration Products | 3 |
| Pleatco | 2 |
| #Wejoy | 1 |
We've carried out a comprehensive analysis of 5,482 reviews on cartridge pool filters, using our selection criteria to identify the best options in the pools, hot tubs & supplies. Our findings reveal that most customers typically select cartridge pool filters priced around $80.25, with top brands including guardian filtration products, future way, poolpure, intex, swimline, toread, pellucid and cryspool and porscan
Our team of expert editors reviewed these high-quality items and handpicked the top 6 cartridge pool filters for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the pools, hot tubs & supplies category. These include filterdeal, future way, health number 1, amazon.com, amazon warehouse, in the swim pool supplies, smoothtrans, pellucid and cryspool and river colony trading .
We are dedicated to assisting our users in finding the right filters Products based on their needs, saving them considerable time when choosing which cartridge pool filters to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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