How to add cold air return in an interior wall?
I have a room over the garage and need to move the cold air return. Right now itÃ¯Â¿Â½s in the ceiling right next to the furnace outlets. I would like to move it down to floor level using the cavity between the studs as the chase. How do I modify the cavity to make it usable as a cold air return? Any links with pictures would be appreciated.