...after the initial installation. I used a three inch pvc pipe, which fit perfectly into the intake. Sealed the gap with black duck tape. Quack! A steady stream of comfortable warm air arrives from the ceiling down into the living area. The 2 speed is adequate and very quiet. But I'm still experimenting...the 1 speed, which is barely audible, might work. I couldn't be happier with the results! The pic on the left is the initial fan mounted on a piece of 1x6. The other pic is the finished project, mounted on a piece if 1x8.
Rating: [5 of 5 Stars!]