Originally Posted by Lizer
Wouldn't you want more fans pulling air out instead of moving it in so it removes more of the overspray?
Not when you're using plastic sheeting for walls. If you have rigid walls a negative pressure booth would work but with any kind of flexible walls you want positive pressure to keep dust down. If you don't have that the plastic will move around a lot which not only kicks up dust but also creates static electricity. You could use a single fan to help remove air (behind a filter of course) just as long as you keep more air going in than coming out.
Like I said it takes about two minutes to completely replace the air in a single car sized booth with just two 20" box fans running on medium speed.
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