My fan is not explosion pruf but it is belt drive with the motor vented from the outside. My lights are not bomb proof either but dont reside in a big cloud of overspray. I can clear the air out the direction I want it to go without building up to dangerous levels. Thats really the key, its more than this fixture or that, its getting the booth to clear the air at the rate you want it to. I am pulling a negative pressure on the booth with no neg pressure on the building, fumes never come out of the booth, its being constantly drawn out. Mine looks simple and it is, in fact it works so well that I leave well enough alone. I was going to put a power winch on the curtain but the boat hand winch works fine. I have seen some makeshift setups over the years by body guys, some really crude and only one disaster that I can recall when a couple the old boys get drunk one night and gonna paint this car so they heat some paint on the stove,, hahaha, they start a fire somehow but I have seen clouds that you would have thought they go boom but you gotta get pretty rich. Most of the fires are not directly related to spraying but spilling a can of thinner, rags, etc No, mine isnt "approved" but its not haphazzard either. The fresh air intake essentially goes by the lighting, its really upwind. I could have sucked the air out the floor but I quick mounted the fan in my loading dock door which I rarely use, can close the door in cold weather, its super versatile. I only really need it a few times a year, its out of the way, small stuff I sit right inj front of the fan, even common spray cans sometimes, I painted a machine cover tonight, didnt even need to set up, just turn the fan on.
