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Learn more about financing & leasing here.
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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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Thursday, Nov 27
Recently Viewed
Size Name: 8-Inch 200mm
Features
- HOME IMPROVEMENTEspecially suitable for inserting into dryer duct. Perfect for use in bathrooms, garages, sheds, campers, stopping inflow of air from AC units, range hood extractors, heating systems.
- EASY INSTALLATIONThe duct damper opens and closes automatically, allowing only one-directional airflow. The damper blades open only in the outflowing air direction when the shutter is installed. The duct valve for 8-inch duct best installed in a horizontal position and inserted fully into the duct. This also applies to vertical installation.
- GREAT FOR HOME USEThe inner rubber seal is used for better tightness and for noise reduction. The outer foam sealing strip provides good tightening and fixing of the backdraft damper inside the duct. The back draught valve can be inserted into a non-flexible metal or plastic duct directly, but for flexible duct you must use steel duct clamps to secure the backdraft damper.
- SUPPORT GUARANTEEWe have a 24-month warranty. Feel free to contact us with any questions. We will reply within 24 hours.
Manufacturer: FRESH SPEED
Part Number:
Item Weight: 8.1 ounces
Package Dimensions: 8.46 x 8.11 x 2.48 inches
Item model number:
Size: 8-Inch 200mm
Batteries Included?: No
Batteries Required?: No
Date First Available: February 24, 2022
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Nov 27
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.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Top Amazon Reviews
Size Name: 6-Inch 150mm
We live in a very rural, windy area. Husband installed a vent for the microwave fan above our stove to vent outside. Any kind of wind had the vent making so much noise throughout the day Abe night. We finally got fed up with it and purchased this... it was extremely easy for him to install and sealed great! We no longer hear the extremely loud, annoying flapping and it has stopped so much backdraft. The fan ventilation system is even quieter than it was before! We've had it installed for over a month now with some pretty nasty storms and seems durable!
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Reviewed in the United States on June 14, 2025 by Margarita F.
Size Name: 4-Inch 100mm
Fit in our 4 inch pipe. Just what we needed for our bathroom vent fan exhaust to be pushed out yet closed when it’s hot and humid for no air to come in. Excellent product!
Reviewed in the United States on August 5, 2025 by Amazon Customer
Size Name: 8-Inch 200mm
The media could not be loaded. Works as hoped
Reviewed in the United States on August 15, 2025 by Sean. S
Size Name: 6-Inch 150mm
This backdraft damper has been very effective at keeping odors out, which has made a huge difference. It works well most of the time and has really improved the air quality in my space. The only downside is that it occasionally gets stuck, so I have to check on it and adjust it now and then. Other than that minor issue, it’s a solid product that does what it’s supposed to do.
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Reviewed in the United States on November 5, 2024 by Kevin Chen
Size Name: 6-Inch 150mm
Excellent. Works as advertised.
Reviewed in the United States on July 26, 2025 by Tom M.
Size Name: 4-Inch 100mm
Nice damper. Works great for my dryer exhaust system. Hoping to keep some cold air out of my dryer vent exhaust. Seems to help a bit. Def will keep critters out, not that I ever had a problem before… but nice in the Winter time to reduce cold air infiltration.
Reviewed in the United States on February 6, 2025 by Meeikal
Size Name: 6-Inch 150mm
It's very important to prevent air escapes from your house.
Reviewed in the United States on June 25, 2025 by MOHAMMED EZIREJ
Size Name: 4-Inch 100mm
Quality product with many great design features especially the way it gaskets well inline in a pipe. It's just too tense in the spring. If the spring allowed it to open closer to 90% rather than 30% I'd have been thrilled. My clothes dryer couldn't force out enough air to activate this correctly.
Reviewed in the United States on July 24, 2025 by Kalia