Best Neverest in 2026

✅ WELL-MADE The backflow damper prevents the wind especially cold and warm air from entering through the ventilation duct. This 5 inch backdraft damper is made out of galvanized steel and the flap leaves are made of aluminum. The axis and spring are made of stainless steel, 3.5 inches deep, and can withstand temperatures from 14 to 140 °F.

✅ FEATURES The backflow flap opens and closes automatically at low air volumes. It has a smooth-running spring and an internal foam strip to keep the blades from rattling and can be installed horizontally or vertically.

✅ MULTIPLE USE Designed for use in air conditioners, dryers, exhaust, extractor or range hoods, heating ducts, vents, and other HVAC applications.

Designed for ventilation applications including HVAC, dryer, grow rooms and tents.

Four-layer design makes it more durable and resistant to leaks, tears, and cuts.

Steel-wire spiral structure is flexible and easy-to-install in hard to reach places.

Designed for ventilation applications including HVAC, dryer, grow rooms and tents.

Four layer design makes it more durable and resistant to leaks, tears, and cuts.

Steel-wire spiral structure is flexible and easy-to-install in hard to reach places.

Designed for ventilation applications including HVAC, dryer, grow rooms and tents.

Four layer design makes it more durable and resistant to leaks, tears, and cuts.

Steel-wire spiral structure is flexible and easy-to-install in hard to reach places.

4 INCH x 25 FT DURABLE FLEX DUCT - We made this flexible aluminum 4" ducting with an extra layer of PVC outside for added durability. Gone is frustration from the accidental rips and tears in thin exposed aluminum ducting products. This 4" vent hose will work for your dryer, duct fan, grow tent, or whenever you need to move air from one point to another.

4 LAYER PROTECTION- Our 4 inch duct hose Keeps your ventilation system free of rips, pin holes and resistant to leaks. Under the White PVC layer our ducting is built with 2 layers of Aluminum Foil With a layer of PET and Steel Wire Helix to preserve the shape

FLEXIBLE & EASY TO USE- TerraBloom 4 inch air ducting is super flexible and easy to install. It will slide right on your Duct Fan, Vent Exhaust, Carbon Filter or Light Reflector. We include a pair of 4 Inch Clamps to make the installation a breeze

Extremely Durable: This is a heavy duty 26 gauge galvanized roof vent hood with a high performance polyester powder coated finish.

Protection Against Corrosion: Our vent caps are ASTM B117 tested for anti-corrosive properties, showing very little or no signs of corrosion on our high performance polyester powder coated galvanized steel surface. Other leading and foreign brands have little or no corrosive protection.

Features: Riveted construction; does not use caulk. Includes pre-drilled holes for easy mounting. Vent also comes with a flapper (damper) that prevents back drafts.

Designed for ventilation applications including HVAC, dryer, grow rooms and tents.

Four-layer design makes it more durable and resistant to leaks, tears, and cuts.

Steel-wire spiral structure is flexible and easy-to-install in hard to reach places.

Designed for ventilation applications including HVAC, dryer, grow rooms and tents.

Four-layer design makes it more durable and resistant to leaks, tears, and cuts.

Steel-wire spiral structure is flexible and easy-to-install in hard to reach places.

Rubber pipe coupling designed to securely pair ducted components together while preventing air leaks.

Matte black rubber construction is flexible, heavy-duty, and can easily fit over duct ports and piping.

Minimizes noise by absorbing sound waves from fan vibrations and airflow traveling through ductwork.

All-In-One Combo: This inline fan combo enables your ventilation system set up in a grow tent, which is ideal for cooling down heat from lighting fixtures and controlling hot and humid conditions

Powerful Inline Fan: Made of galvanized steel, the 4-inch inline fan runs at a speed of 2300 RPM and produces an air flow of 190 CFM, with a noise level of just 30 dB the maximum

Premium Carbon Filter: Interior and exterior mesh construction provides 53% open area for free air flow; It is filled with 1050+ RC 48 Virgin Australian activated charcoal captures air contaminants effectively

LIGHTPROOF DUCTING - We made this aluminum 6 inch duct with your Grow Room needs in mind. Thick layer of Black PVC on this ducting prevents light leaks. Works with exhaust and intake fans, carbon filters and hooded lights which are 6" in diameter

4 LAYER PROTECTION- Our 6 inch flexible duct Keeps your ventilation system free of rips, pin holes and resistant to leaks. Under the White PVC layer our ducting is built with 2 layers of Aluminum Foil With a layer of PET and Steel Wire Helix to preserve the shape

FLEXIBLE & EASY TO USE- TerraBloom 6 inch duct hose is super flexible and easy to install. It will slide right on your Duct Fan, Vent Exhaust, Carbon Filter or Light Reflector. This HVAC ducting includes a pair of 6 Inch Clamps to make the installation a breeze

Perfect Connector: The VIVOSUN ducting is primarily used with duct fan systems in various air circulation and ventilation projects to move and transport air, increasing airflow and easing connections between spaces; It's compatible with front-mounted and top-loading dryers/fans

Premium Material: Made of high-quality aluminum, it is resistant to high-temperature and corrosion-resistant, being able to serve for a long time; The stainless steel clamps are rustproof, corrosion-resistant, and heavy-duty, ensuring a seamless junction

Multi-Layer Protection: It features 3-layer protection, making it more durable and resistant to leaks than single-layer ones; The internal and outer layers are made of heavy-duty aluminum foil that is fire/flame-retardant; Its middle layer adopts PET thermoplastic that protects the ducting from cuts and tears, all while stopping leakage

Perfect Connector: The VIVOSUN ducting is primarily used with duct fan systems in various air circulation and ventilation projects to move and transport air, increasing airflow and easing connections between spaces; It's compatible with front-mounted and top-loading dryers/fans

Premium Material: Made of high-quality aluminum, it is resistant to high-temperature and corrosion-resistant, being able to serve for a long time; The stainless steel clamps are rustproof, corrosion-resistant, and heavy-duty, ensuring a seamless junction

Multi-Layer Protection: It features 3-layer protection, making it more durable and resistant to leaks than single-layer ones; The internal and outer layers are made of heavy-duty aluminum foil that is fire/flame-retardant; Its middle layer adopts PET thermoplastic that protects the ducting from cuts and tears, all while stopping leakage

ATTENTION: Please Read: the inner diameter measures 3" inch and the outer diameter measures 3.5" inch, therefore any pipe connected with mesh pipe cover WILL NOT FIT so adapter such as PVC / rubber elbow or coupling must be purchased separately (not included) - please see listing images and infographic below for more details on compatible size to ensure correct pipe cap fitting

PRODUCT PATENT: PVC drain screen cover with wire round mesh screen built in slot allows water condensation to drain out on the side of the PVC vent screen cap attached to the exposed pipe outdoor through the ground, wall, or roof as shown in the listing images and infographic

SIMPLE & COMPATIBLE: mesh screen vent cover is easy to install and no effort is required by inserting the termination vent cap inside the hub or adapter of the PVC / rubber elbow or coupling (not included) compatible with pipes connected to high efficiency furnace, steam, water heater, air intake, exhaust, roof vents, sewer and water drains

Designed for ventilation applications including HVAC, dryer, grow rooms and tents.

Four layer design makes it more durable and resistant to leaks, tears, and cuts.

Steel-wire spiral structure is flexible and easy-to-install in hard to reach places.

LIGHTPROOF DUCTING - We made this aluminum 6 inch duct with your Grow Room needs in mind. Thick layer of Black PVC on this ducting prevents light leaks. Works with exhaust and intake fans, carbon filters and hooded lights which are 6" in diameter. This duct has insulation R value of 0.

4 LAYER PROTECTION- Our 6 inch flexible duct Keeps your ventilation system free of rips, pin holes and resistant to leaks. Under the White PVC layer our ducting is built with 2 layers of Aluminum Foil With a layer of PET and Steel Wire Helix to preserve the shape

FLEXIBLE & EASY TO USE- TerraBloom 6 inch duct hose is super flexible and easy to install. It will slide right on your Duct Fan, Vent Exhaust, Carbon Filter or Light Reflector. This HVAC ducting includes a pair of 6 Inch Clamps to make the installation a breeze

Perfect Connector: The VIVOSUN ducting is primarily used with duct fan systems in various air circulation and ventilation projects to move and transport air, increasing airflow and easing connections between spaces; It's compatible with front-mounted and top-loading dryers/fans

Premium Material: Made of high-quality aluminum, it is resistant to high-temperature and corrosion-resistant, being able to serve for a long time; The stainless steel clamps are rustproof, corrosion-resistant, and heavy-duty, ensuring a seamless junction

Multi-Layer Protection: It features 3-layer protection, making it more durable and resistant to leaks than single-layer ones; The internal and outer layers are made of heavy-duty aluminum foil that is fire/flame-retardant; Its middle layer adopts PET thermoplastic that protects the ducting from cuts and tears, all while stopping leakage

Perfect Connector: The VIVOSUN ducting is primarily used with duct fan systems in various air circulation and ventilation projects to move and transport air, increasing airflow and easing connections between spaces; It's compatible with front-mounted and top-loading dryers/fans

Premium Material: Made of high-quality aluminum, it is resistant to high-temperature and corrosion-resistant, being able to serve for a long time; The stainless steel clamps are rustproof, corrosion-resistant, and heavy-duty, ensuring a seamless junction

Multi-Layer Protection: It features 3-layer protection, making it more durable and resistant to leaks than single-layer ones; The internal and outer layers are made of heavy-duty aluminum foil that is fire/flame-retardant; Its middle layer adopts PET thermoplastic that protects the ducting from cuts and tears, all while stopping leakage

PVC composite aluminum foil tube: (single-layer aluminum foil tube thickness single thin, density spacing, easy to rupture, short service life) RichYa PVC lamination + double aluminum foil three layers than single-layer aluminum foil tube thicker encryption high temperature resistance, corrosion resistance, not easy to rupture, tube thick circle spacing small uniform distribution of sturdy and durable, reduce noise long service life.

3 layers of thickened aluminum foil: three layers of thickening, processing the upper layer of material production, internal double aluminum foil flame retardant material, double flame retardant, smoke exhaust smooth, easy to handle the odor of grease and smoke

Bend at will: one-piece design bend the curvature of the tube body close to the round, can be expanded and bent at will, the use of resistance to reduce the exhaust and smoke exhaust smoothly and unhindered sealing. Large diameter design, rapid smoke exhaust, interface reinforcement, tighter connection

✅ WELL-MADE The backflow damper prevents the wind especially cold and warm air from entering through the ventilation duct. This 5 inch backdraft damper is made out of galvanized steel and the flap leaves are made of aluminum. The axis and spring are made of stainless steel, 3.5 inches deep, and can withstand temperatures from 14 to 140 °F.

✅ FEATURES The backflow flap opens and closes automatically at low air volumes. It has a smooth-running spring and an internal foam strip to keep the blades from rattling and can be installed horizontally or vertically.

✅ MULTIPLE USE Designed for use in air conditioners, dryers, exhaust, extractor or range hoods, heating ducts, vents, and other HVAC applications.

🛒PART NUMBER:Cenipar dryer vent hose- flexible aluminum foil ducting vent hose(4 inch 8 feet).The package list includes 1 X Flexible Aluminum Foil Ducting Vent Hose,2 X metal clamps.

🛒HIGH QUALITY:Flexible ventilation pipe made of high-quality flame-retardant aluminum and built-in corrosion-resistant steel wire spiral.Temperature endurance range is 0 - 185°F. (-18°C - 85°C).4 inches (diameter) x 8 feet (length) when fully extended.

🛒USAGE:Mainly used in air duct fan systems, used in various air circulation and ventilation projects, including hydroponic planting rooms and tents, bathrooms and lofts, heating and cooling transportation and other devices. It can also be used to cool AV equipment rooms, closets, racks and cabinets.

Flexible Pvc Ducting: Applied hard-wearing, flexible vinyl woven polyester with carbon wire spring and adhesive tape, smooth inside wall. Designed to be super flexible and flame-retardant.

High Performance: The duct' mouth size is 8 inch (22 cm) with length: 7.6 m (25 ft), binging the lightweight duct hose a large cability and high woking efficiency.

Flame retardant and withstands -20° to 180°F temperatures

🛑8 inches by 25 feet PVC flexible duct

🛑Retracts into self-contained carry bag

🛑Temperature resistant to 180°F, positive or negative pressure

🛑20 inches by 25 feet PVC flexible duct

🛑Retracts into self-contained carry bag

🛑Temperature resistant to 180°F, positive or negative pressure

Flexible: 16"x25ft Flexible Pvc Ducting Applied hard-wearing, flexible vinyl woven polyester with carbon wire spring and adhesive tape, smooth inside wall. Designed to be super flexible and flame-retardant.

High Performance: The duct' mouth size is 16 inch (420 cm) with length: 7.6 m (25 ft), binging the lightweight duct hose a large cability and high woking efficiency.

Durable : Thickest fabric on the market 0.35mm， flame retardant and withstands -20° to 180°F temperatures

PVC composite aluminum foil tube: (single-layer aluminum foil tube thickness single thin, density spacing, easy to rupture, short service life) RichYa PVC lamination + double aluminum foil three layers than single-layer aluminum foil tube thicker encryption high temperature resistance, corrosion resistance, not easy to rupture, tube thick circle spacing small uniform distribution of sturdy and durable, reduce noise long service life.

3 layers of thickened aluminum foil: three layers of thickening, processing the upper layer of material production, internal double aluminum foil flame retardant material, double flame retardant, smoke exhaust smooth, easy to handle the odor of grease and smoke

Bend at will: one-piece design bend the curvature of the tube body close to the round, can be expanded and bent at will, the use of resistance to reduce the exhaust and smoke exhaust smoothly and unhindered sealing. Large diameter design, rapid smoke exhaust, interface reinforcement, tighter connection

Flexible Pvc Ducting: Applied hard-wearing, flexible vinyl woven polyester with carbon wire spring and adhesive tape, smooth inside wall. Designed to be super flexible and flame-retardant.

Free Storage Bag: Free big bag for easy duct storage and move. The retractable duct is very easy to collapse and put back in the bag, saving room. Easy to install and easily connect to the extraction side fan lip.

High Performance: The duct' mouth size is 8 inch (22 cm) with length: 7.6 m (25 ft), binging the lightweight duct hose a large cability and high woking efficiency.

4 PIECE SET of worm gear duct clamps let you connect flex duct to a carbon filter, fan and hood for a complete grow room loop. Also suitable for bathroom or greenhouse exhausting applications.

DELUXE KIT with 4 clamps covers all your ducting connections for 1 filter / fan / hood loop. We have clamp sizes to fit 4", 6”, 8”, 10”, 12" or 14" fans and flex duct, as well as gas or fluid hose lines.

STAINLESS STEEL construction is rust resistant for long-lasting durability. Make clean, professional duct connections to connectors, Y’s, and reducers quickly and easily with Happy Hydro 4-Pack Duct Clamps.

<b>White AIR DUCTING SIZE</b>: 4Inches in Diameter x 10 FT Long, Include 2 Stainless Steel Clamps.

<b>FLEXIBLE 4-LAYER MATERIAL</b>: The Dryer Hose is made of 4 layer Thickness (Aluminum Foil + PET + Steel Wire Helix + Aluminum Foil). Flame-retardant coating, Built-in steel wire for reinforcement and long lasting performance.

<b>THERMAL ENDURANCE</b>: Temperature Range:-30degree-150degree.

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