I am finishing my basement. Almost done. One of the last things is the vent covers/diffusers for the ceiling duct work. I bought the diffuser/damper from HD, but they really sucked. The damper seemed too small to fit in the duct work. It would not open and close very easy. The screw holes...
I have an unfinished basement that I am in the process of finishing myself. I have a walk-out basement and live in Minnesota. In our frequently very-humid summers (I know...it gets much more humid in other climates), my basement is nice and cool. On my exterior exposed 2X6 basement walls...