Dale P.: Works very well
United States on Jul 07, 2023
R B.: I did have to "adjust" the spring closers a bit, they were too strong for the hood fan I am using it with. That of course is better than being too weak, which I could have not done anything with! It is working very well. and that is a very good thing, as it is really hard to get to, it is at the far end of a very tight attic space and I insulated, the whole exhaust pipe to prevent as much condensation as possible. I don't ever want to go back to "fix it"!
Canada on May 16, 2023
RegularJoe: When my contractor put in my new rangehood, they didn’t put in a draft blocker because the range didn’t come with one. So I did this myself and it was super easy and therefore I am immensely impressed. It seems to work as I don’t get any Backdraft and my house is no longer losing a lot of extra heat.
Canada on Apr 10, 2023
Linda Jean: Très efficace lors de la pose des hottes de cuisinière
Canada on Feb 26, 2023
Doug Bryant need to add more issues about buying this toy. Amazon has yet to respon to me about my problem of a refund. It has been over a week and NO response to me refund. WHY ?????: Part of a three piece instilled job.
United States on Jan 13, 2023
Jeremy S.: Product works well. This is the second one I bought and replaced all the plastics ones I bought in the past that sometimes get stuck allowing cold air back in. Highly recommend
Canada on Jan 07, 2023
Tim: When I received the damper module itself, the dampers were warped a bit so it didn't make good contact against the seal. Was able to mostly get it back to shape but not like it should be.
United States on Oct 30, 2022
Scott: Had a bathroom exhaust fan flapper that made crazy amounts of noise when windy outside. I took that dampener off right at the fan and went outside to install this metal dampener right at the output under the fascia. The bird screen was the same tube size so a little duck tape and reattaching the flex duct to the dampener did the trick. Since then, haven't had an issue with sound. There's still a small amount of chilly air that comes back but much better than the previous setup. Other users tried using tape to seal the center and I tried when I bought it too, however I failed at that and just installed as is. So far so good 1 month after install during the middle of winter.
United States on Feb 03, 2021
Pipermom: Living in the deep south, after installing a new kitchen exhaust fan the down-draft from the attic was overwhelming. Especially since kitchen exhaust fans are located right over the stove and it is canning season! This item is wonderful. There is no more down-draft at all and combined with my wonderful new exhaust fan my kitchen is comfortable again. At least as comfortable as it can be when I am canning in the summer time in the deep south ;) Great product, shipping time was fast, installation was easy. Thank you!
United States on Aug 14, 2020
| Backflow Dampener Draft Blocker - Duct Draft Stopper for Preventing Backdrafts | Heavy-Duty Aluminum Ducting with Four-Layer Protection | VIVOSUN 6 Inch 25 Foot Black Non-Insulated Flex Air Aluminum Ducting for HVAC Ventilation and Cooling System Maintenance | |
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| B2B Rating |
76
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96
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96
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| Sale off | $5 OFF | ||
| Total Reviews | 76 reviews | 201 reviews | 57 reviews |
| Customer Reviews | 4.4/5 stars of 853 ratings | 4.7/5 stars of 7,403 ratings | 4.6/5 stars of 5,829 ratings |
| Item Weight | 7.2 ounces | 0.01 ounces | 4 pounds |
| Best Sellers Rank | #129,899 in Tools & Home Improvement #235 in HVAC Ducting | #3,887 in Tools & Home Improvement #7 in HVAC Ducting | #6,113 in Tools & Home Improvement #9 in HVAC Ducting |
| Manufacturer | REPA MARKET | No | VIVOSUN |
| ASIN | B083M613K3 | B0791V19H7 | B07WT4VNC1 |
| Batteries required | No | No | |
| Product Dimensions | 6.22 x 6.22 x 3.74 inches | 17 x 5 x 5 inches |
Italy on Sep 08, 2023