I had some 3/8" plywood laying around so after using the size specs from a large Pace unit just glued and nailed together. Also had a 24" florescent light unit and used it in front. I had to purchase a bathroom exhaust fan, switches, receptacles, and air filters. I have 4 switched receptacles (light, exhaust fan, compressor, spare) and I use a cord to power them up. It may not be the best but it's been working fine for me.