Over the holidays, I made a homemade airbrush cabinet. I dismantled an old dehumidifier and kept the metal cover and the fan. I used the cover as the sides and back, added leftover paneling for the top n bottom, cut a hole and mounted the fan, bought a plastic cake cover from the dollar store to cover the fan, bought a 4” duct adapter and flex hose and mounted them, added a switch for the fan/light and bought the filter. Had all of the stuff except for the 4” adapter, flexy duct, plastic cover and filter. All toll, cost me a little over $20 and it works pretty good.