I am very pleased with my paint booth! I made it back in March. I wanted a screen to paint through so that the parts don't go flying all over the place when I am painting. The screen is on an angle so that I do not have to paint straight down (my gun is gravity fed). The bar on top is used to hang the parts on so that I can flip them to paint the other side and remove the parts while they are still wet to paint other parts. There is a furnace filter on the side with a modified air exchanger pulling lots of air through the booth.
I got this air exchanger from the dump
I added a fan inside to increase air flow.
Portions of the screen can be sectioned off to give more air flow when not using the whole booth