I have a small powder room that doesn't have a register/vent so it gets a bit cold compared to the rest of the house. I could install a new duct line split off from the main but there is a wall/floor register right on the other side running in the wall cavity in a 2×4 wall. I'm wondering if I can just cut out the back of the rectangular duct and install a baffle to split the air to two registers and then fine tune with how open the registers are. Or is there a premade solution for this? I found some split return air ducts for equalizing are between rooms but not this specific setup
Best Answer
My parents' house has one place with vents that look exactly like that - the duct has two vents, one on each side, and there is a baffle inside such that you cannot look through the vent and see the other room. The baffle extends about 1-2 inches past the edge of the registers.
I spent some time trying to find a pre-made part (or even a picture of someone having done this), but I can't find one.