Top 9 Backdraft Damper 4 Inch – HVAC Ducting

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1. AC Infinity

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One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 4” Ducting in Range Hoods and Bathrooms Fans, AC Infinity 4" Backdraft Damper

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AC Infinity #ad - Galvanized steel body with spring-loaded aluminum damper blades that open with minimal airflow. An antidraft duct insert designed for use with range hoods, bathroom fans and other home HVAC applications. Fit for 4 in. Mounts horizontally or vertically to prevent backflow and debris from entering ducting. Duct openings | product Length: 5. 03 inches | Finish: Powder Coat. Features outer rubber gaskets that create an airtight seal and grip between the damper and ducts.
BrandAC Infinity #ad
ManufacturerAC Infinity #ad

2. neverest

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Neverest RK 4" Professional Backdraft Shutter Damper Connector Duct

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neverest #ad - The backflow flap opens and closes automatically at low air volumes. Designed for use in air conditioners AC, dryers, heating ducts, exhaust, extractor or range hoods, vents and other HVAC applications. The backflow damper prevents the ingress of cold or warm air and wind from entering through the ventilation duct.

Installation: the backflow flap is installed by inserting it into the ventilation pipe until it stops. It has a smooth-running spring and an internal foam strip to keep the blades from rattling and can be installed horizontally or vertically. The backdraft shutter is installed so that the damper blades open only in the outflowing air direction. Back draught valves can be inserted into ventilation ducts which are flexible or non flexible.

Cannot be used with plastic ducts as the sizes are different. The position of the spring should be horizontal for horizontal installations so that it can open and close optimally. The 4 inch backdraft damper is made out of a Galvanized steel, the flap leaves are made of aluminum, while the Axis and spring are made of stainless steel, 3.5 inches deep and can withstand temperatures from 14 to 140 °F.
Brandneverest #ad
Manufacturerneverest #ad
Height3.94 Inches
Length3.46 Inches
Width3.94 Inches
Part Number40545030039031

3. calimaero

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Backdraft Exhaust Damper Seal 4 Inch von Calimaero One Size Fits All 4 Duct Backdraft Damper Gravity Powered Made in Germany 4 Inch HVAC Damper Dryer Vent Valve Keep Cold Air Out

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calimaero #ad - No more having to buy multiple products, to find the one that works. 4 inline dampers duct valve gummi flaps are easy to open for almost all dryers or booster fans, the lack of moving spring will ensure a long lifespan saving you time and money. Make sure the flaps open away from the ventilator.

The outer rubber ring creates a seal around the strong plastic body giving you the perfect vent damper. The rubber seal is quieter than all metal or plastic models. You will be very pleased with the quality, and ease of installation of this product! Purchase with ease and relax into your draft free living space. As the the product is made out of weather resistant plastic you can install the dryer damper in high humidity environments. Vent air blocker dryer backdraft damper main recycled plastic part is small enough to fit into almost all PVC, Metal and other ducts of the 4 inch size.

4 inch backflow preventer is easy to install, just crame these in the 4" ducts and the 100% rubber flap will seal off all drafts coming in from your dryer vent or bathroom exhaust fan. 4 inch backdraft damper vent air blocker works in any orientation even 45 degrees, or 15 for that matter. This will ensure you arent annoyed by constant annoying rattling from cheaper models. 4inch damper vent air blocker does what its designed to do, functionality, value, prevents outside air from entering back into the house via your dryer, bathroom fan and grow tent.
Brandcalimaero #ad
Manufacturercalimaero #ad

4. Klimapartner

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Backdraft Damper Shutter Inline for 4 Inch Dryer Duct for Retrofitting 4 Inch Ducting Prevents Unwanted Drafts in Metal Ducts in Line Draft Blocker

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Klimapartner #ad - Opposing blade damper 4 backdraft should be interested behind the bathroom fan or inline fan. 4 inch duct damper opens and closes automatically, preventiNG unwanted drafts and the duct valve for 4 inch ducting can be installed horizontally or vertically.

Bathroom vent draft blocker or exhaust fan shutter is INSTALLED by pushing the hvac damper into the duct, blades open away from exhaust air. Not for use in plastic ducts. The spring needs at least 15 Pa to open correctly. This will help weaker booster fans to push open the 4 inch backflow preventer dampener. 4 inch damper housing is made of galvanized steel and the dryer vent valve flaps are made of aluminium the butterfly damper axis and spring are made of stainless steel.

Professional long life quality is what the klimapartner brand stands for! backflow damper exhaust fan shutters are designed for use in ac units, installation in dryer ducts, bathrooms, STOPPING INFLOW OF AIR from range hoods and heating systems and prevent cold or warm air from entering back into the duct.
BrandKlimapartner #ad
Manufacturerklimapartner #ad
Height3.94 Inches
Length2.05 Inches
Width3.94 Inches
Part Number4054503017276

5. REPA MARKET

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Inline Fan Vent, Backdraft Damper Duct, Draft Blocker, Vent Deflector 4'' Inch, Backflow Preventer, Draft Stopper

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REPA MARKET #ad - It has a smooth-running spring and an internal foam strip to keep the blades from rattling and can be installed horizontally or vertically. Back draught valves can be inserted into ventilation ducts which are flexible or non flexible.

Damper has 2 valves, dryers, exhaust, designed for use in air conditioners AC, heating ducts, extractor or range hoods, vents and other HVAC applications. Back draft damper is made for insertion into inch ventilation ducts. Cannot be used with plastic ducts as the sizes are different. The backflow flap opens and closes automatically at low air volumes. The backdraft shutter is installed so that the damper blades open only in the outflowing air direction.

The position of the spring should be horizontal for horizontal installations so that it can open and close optimally. Installation: the backflow flap is installed by inserting it into the ventilation pipe until it stops. It has a strong spring and can be installed either horizontally or vertically. The backflow damper RKI opens and closes automatically. The flap is suitable for retrofitting, since it is completely inside the duct.
BrandREPA MARKET #ad
ManufacturerREPA MARKET #ad

6. Repa Market

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Backdraft Damper Dryer Vent Hose, Back Draft Blocker, Inline Extractor Fan Vent Back Draught Shutter 4'' Inch

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Repa Market #ad - This backdraught shutter can be used as a part of a long duct run for a variety of purposes including whole house ventilation, Tumble Dryer Venting, positive pressure, air conditioning, HVAC, passive stack vent, and Heat Recovery Systems.

Compatible with diameter 4 Inch. White plastic extractor fan backdraught Shutter - Male Spigot - External diameter is ~ 124mm. Perfectly suited for ducting your bathroom or kitchen extractor fan, or Cooker Hood, Hydroponics, In-Line Extract Fans, Prevent cold air from entering your home through the dryer vent with our inline dryer vent draft blocker. Easy to dIY! Comes with balanced damper fully assembled, noises, stops unpleasant odours, or draughts flowing back through your duct.
BrandRepa Market #ad
ManufacturerRepa Market #ad

7. Ozo Brothers

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Backdraft Damper Duct 4" inch / 100mm

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Ozo Brothers #ad - Backdraft dampers with galvanized steel collar and lightweight aluminum damper blades. Excellent quality back draft dampers. Ideal for use with intake or exhaust duct systems. Manufactured of heavy-gauge galvanized steel with heavy duty springs // Spring loaded for positive closure. They prevent back draft air when your fans are off.
BrandOzo Brothers #ad
ManufacturerOzo Brothers #ad

8. Honoson

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4 Inch Backdraft Damper Galvanized Steel Inline Fan Vent with Spring-Loaded Folding Blades and 2 Pieces Duct Clamps for Ducting in Range Hoods and Bathrooms Fans

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Honoson #ad - Special design: backdraft damper has a smooth-running spring and an internal foam strip to keep the blades from rattling; The backflow flap opens and closes automatically at low air volumes. Wide range of usages: these draft blocker set can be widely applied in ACs, range hoods, heating ducts, exhaust fans, extractors, vents and other residential and industrial applications.

Reliable materials: galvanized steel damper is made of quality galvanized steel, the flap leaves are made of aluminum, and the axis and spring are made of stainless steel, which all are strong and serve you for a long time. Package includes: the package comes with 1 piece backdraft damper and 2 pieces duct clamps; The backdraft damper is about 3.

46 inches long, 3. 9 inches in diameter; 2 steel duct clamps can secure the backdraft damper to your ventilation pipe or other duct openings; Please fasten the loop with screws. Easy to install: the backflow flap is installed by inserting it into the ventilation pipe until it stops; The position of the spring should be horizontal when the flap is installed horizontally so that it can be opened and closed optimally; And it can be installed horizontally or vertically.
BrandHonoson #ad
ManufacturerHonoson #ad

9. Fantech

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4" Duct, Fantech 9800000 RSK-4 Backdraft Damper

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Fantech #ad - Backdraft dampers with galvanized steel collar and lightweight aluminum damper blades. Spring loaded for positive closure. 4" duct.
BrandFantech #ad
ManufacturerFantech #ad
Height5.9 Inches
Length7.4 Inches
Weight0.7 Pounds
Width6.8 Inches
Part Number9800000
Model9800000