For using the air filter on the paint booth where do you guys get your filters from I heard somebody say you could get a big roll at Home Depot and just use that and cut it to size

Hi, in the process of building a spray booth and looking at options for fans and filtration. I’ve had a bit of a search of previous posts . Not going the full on rain curtain system just want to box something like these at the top at one end and build some filtration at ot