4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector - Black
Condition: New
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This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Sunday, Dec 7
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Size Name: 4 Inch
Color: Black
Features
- MaterialThe 4 inch backdraft damper is made of a Galvanized steel with powder coat, the flap leaves are made of aluminum
- InstallationThe backdraft damper is installed by pushing it into the ventilation pipe as far as it will go. The position of the spring should be horizontal when the flap is installed horizontally so that it can be opened and closed optimally. This also applies to the vertical installation
- FunctionThis airflow regulating backdraft shutter fits over the TD lip and is designed to improve ventilation by preventing air from re-circulating when the fans are not in use
- Wide Application These backdraft dampers can be widely used in ACs, exhaust fans, extractors, range hoods, heating ducts, vents and other residential, commercial and industrial applications
- NoteBack 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. All dimensions are measured manually, please allow 1-3mm differences
Color: Black
Brand: Kikerike
Maximum Gap Fill: 4 Inches
Manufacturer: Kikerike
Manufacturer: Kikerike
Part Number: DB-4in-black
Item Weight: 4.6 ounces
Package Dimensions: 4.96 x 4.41 x 3.7 inches
Size: 4 Inch
Color: Black
Batteries Included?: No
Batteries Required?: No
Date First Available: January 8, 2024
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Dec 7
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size Name: 8 Inch
Color: Sliver
Great product. Easy install works great
Reviewed in the United States on July 3, 2025 by Amazon Customer
Size Name: 6 Inch
Color: Sliver
This damper worked perfectly to solved my problem. It is quiet and installation was simple
Reviewed in the United States on March 7, 2025 by Barb Moore
Size Name: 6 Inch
Color: Sliver
Strong. It opens easily with very slight pressure. Closes quickly and seals up great. It actually slides inside the pipe snugly, which is great, because your pipe length does not change. Very impressed. It is also whisper quiet when it opens or closes.
Reviewed in the United States on June 27, 2025 by Bryan Hatch
Size Name: 6 Inch
Color: Sliver
The flaps would rub against the bottom of the damper. I wrapped a paper clip around the bottom part of the rod to make a washer and cut off the excess. This raised the flaps high enough so they no longer rubbed. The damper must be installed with the flaps oriented vertically (like a door). When connecting the damper to the duct work, the crimped end off the existing duct will not fit into the damper so the crimp needs to be cut off and the damper will slide into the duct. When installing a sheet metal screw, there's no issue on the supply side but on the exhaust side the screw must be either at top dead center or bottom dead center so it will not interfere with the flaps opening. Once installed, the damper worked great and stopped the cold outside air from entering the stove exhaust.
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Reviewed in the United States on February 2, 2024 by Tom Pfoh
Size Name: 6 Inch
Color: Sliver
I bought this to help seal the outside. I kept having a draft come in and making the kitchen cold. Size is perfect! Airflow is controlled. Great value since I can keep electric down.
Reviewed in the United States on June 25, 2025 by Prado
Size Name: 8 Inch
Color: Sliver
Why did you pick this product vs others?: I had to replace the fan on my kitchen vent. There was no damper on the original vent so air just came in and out at will. Not good. This fit my 8 inch vent perfectly. When I turn on the fan I installed, it opens up perfectly. Highly recommend.
Reviewed in the United States on June 25, 2025 by Fandr2
Size Name: 4 Inch
Color: Sliver
Very thin material. Hope will last some time.
Reviewed in the United States on January 14, 2025 by Tom
Size Name: 6 Inch
Color: Black
I had a high volume of backdraft coming out of my over the range microwave making the kitchen 12 degrees colder than the rest of the house when it gets cold. I played with the baffle that came with the microwave, which involves taking down the microwave each time, bouncing between allowing it to work but really not stopping any backdraft to it getting stuck preventing any stove venting getting through. If I had bought this 17 dollar (6in black) item before this last cold spell I would have saved hundreds of dollars on heating. Everything is quality with this. For such thin (lighter is better) sheet metal the vanes are perfectly flat and square making full contact with the generous gasket keeping all air out of the house. The lowest setting on the vent fully opens the vanes. Even the paint job, where only a 1/4" section can be seen when installed, looks high quality. Easy to install just pop off the vent cap outside, drop this in to the vent pipe (I then duct taped it because I didn't by a clamp) then tighten the vent cap back on to the other half of this.
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Reviewed in the United States on January 26, 2025 by T