Recommendations for a Range Hood Damper and Thermal Break
Looking at range hoods, it seems as though most manufacturers realize that their built-in dampers don’t work very well as many of the manuals contain text like:
Cold Weather Installations:
An additional back draft damper should be installed to minimize
backward cold air flow and a thermal break should be installed to
minimize conduction of outside temperatures as part of the vent
system. The damper should be on the cold air side of the thermal
The break should be as close as possible to where the vent
system enters the heated portion of the house.
The question is, does anyone know of a good back draft damper that can be added that really does a good job of air sealing? Additionally, what do people use for a thermal break? I’m assuming some type of plastic fitting but I have not come across anything like that yet. Thanks.
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