The Stovebolt Site Forums The Shop Area Paint and Body Shop Paint Booth Design

I used a furnace fan years ago but used it in reverse of what you are describing .i used it to suck the air out (overspray) and had the bottom of the garage door open a inch or so to allow air in with a wet floor .Blowing air in would it not stir up a lot of dust .Also used a filter on the furnace fan to catch the paint so no one would get overspray in the area.