My air return vent is underneath a little bar area that I created in our bonus room. I want to put some fabric underneath the bar to make that area look a little nicer. The fabric would be long on the left front of the bar and shorter over the small black refrigerator on the right underneath the bar. The area is 4' wide x 24" deep. Would this greatly hinder the air return vent if I "skirt" underneath the bar?