We moved to a new house (to us) and I had a corner of the basement that was the perfect size for adding a small paint booth. We had a bath cabinet left over from the remodel that was 4' wide and 2' deep. The booth was built it to fit in the space left above it, and that turned out to be 4' wide 2' deep and 5' tall. Part of the height was used to hold the filters and blower. I cut a hole in the brick for a 4" vent that I purchased from Vent Works They have plans and parts to build a small paint booth. (I have no affiliation with Vent Works, I just found their stuff while looking online for paint booth ideas.) I found a Dayton squirrel cage blower on craigslist for 1/3 the price of new, and 20x20 filters on LetGo for free. The wood is the absolute cheapest 1x4's from Home Depot, and one sheet of the cheapest 4x8 plywood. The sides and back are frame and panel construction held together with pocket holes and 2" screws, and lots of glue. The rest was cut to fit scraps of wood. The back has white faced pegboard that I removed from the basement. There are 3, 2' LED light fixtures controlled by a switch, and there is an hour mechanical timer switch for the blower. I also ran an air hose to the basement from the compressor in the garage, and added a combination regulator-moisture trap from Harbor Freight. This will allow me to run an airbrush when I can get around to figuring out the one that I found in Habitat Restore. I have painted a couple of rockets in it so far and the blower will remove the fumes, however for some of the longer drying enamels, it takes two cycles of the timer. I am happy with it so far.