![]() ![]() The blower I ended up getting was this one: I prefer metric for most things, but Imperial is what the formulas on the website use. My apologies for all the Imperial measurements. Multiply by 3 since I'd be using flexible duct, and I need a fan capable of delivering 400CFM at 1.2"SP. 5", (that will also give me a certain built-in safety margin). The static pressure table on the website doesn't have figures for 6" 400CFM, but loose extrapolation of the figures it does give implies I can round it up to. That's (2' x 2') x 100 = 400CFM for the booth itself. Originally the booth I was going to make would have been a 2x2 foot face cross-draft design, with ~6 feet of 6 inch duct w/ 2 right angle bends. I still want/need to do it, but I need to figure out how to reshuffle my living space for it, so right now my "spray booth" is the great outdoors and a respirator. then my living situation changed, and I had to shelve the project. I made plans to: figured out what size booth I wanted and how much ducting it would need for where it would be, did the math and bought a blower that matched the specs. ![]()
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