6" INLINE DAMPER/BACKDRAFT - $30 (santa rosa)

For sale is a 6" and an 8" in-line damper/backdraft.
These are the nice ones, with the foam liner to create a superior seal.
The seals are in perfect brand-new condition.
These are crucial for your venting system to achieve maximum efficiency.
And to reduce the backflow of your stank.
$30 EACH