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Old 11-09-13, 05:41 PM   #1
Helper EcoRenovator
Join Date: Mar 2012
Location: Warwick, Rhode Island
Posts: 85
Thanks: 21
Thanked 27 Times in 16 Posts
Default Inexpensive Backdraft Damper that actually works

I have tried the store bought metal butterfly backdraft dampers with the 4 hot air collectors I have plugged into my house.

None of them were stopping the cold air backdrafts that happen when the sun goes away.

After doing some digging, I ended up finding a different Mfg. backdraft damper on the web that I liked so decided to copy their design and see if I could get good results.

After some trial and error with different materials I finally nailed the problem.

I made a pdf file showing the build which is here for anyone interested.

A minimum of materials are needed to put these together..

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Pat from Warwick, RI

Please Note:
Comments and/or suggestions I make here at the forums on 'your' projects as well as my own have all been carefully and scientifically calculated by 'the seat of my pants'
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Last edited by solarhotairpanels; 11-09-13 at 05:50 PM.. Reason: adding pictures
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The Following 4 Users Say Thank You to solarhotairpanels For This Useful Post:
buffalobillpatrick (04-04-14), Exeric (11-09-13), MN Renovator (11-12-13), Piwoslaw (11-11-13)

backdraft damper diy

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