Regs say 100FPM so for a spray booth of 8' X 9' oversizing to 10,000 CFM should be good.
Whose code regs, OSHA, EPA?
Good gosh, an 8 x 9 spray booth sounds massive. How much spray finishing on really large furniture pieces do you expect to be doing? You use a lot of lacquer too as I recall. I found this tidbit by Bob Flexure that may be useful. These strip curtains might work too.
https://www.popularwoodworking.com/techniques/finishing/spray-booth-for-a-small-shop
https://www.curtain-and-divider.com/pvc-strip-curtains/strip-curtain-kits/
OSHA 29 CFR Table G-10 of 1910.94(c)(6)(i) specifies a face velocity spray booth entrance for the stuff I spray at 100 fpm
Gearing up to do cabinets, 5 days for a medium size kitchen in say a 3000 sq ft. home.
Gotcha. So the giant 8' x 9' spray booth will be disassembled after the kitchen cabinet finishing?
Jeff, no I am doing a permanent spray booth. I did not put too much thought in this, but the shop has four 8 x 9 garage doors. I put one door in for the booth to be opened when I spray. The booth filter and fan will butt up to the door. The booth will be 9 wide 8 high.
my 8x8 is 7500 cfm. That's a 2hp motor. The biggest issue you will have is make up air if you are in a climate controlled area. You will need to open up another rollup door to the equivalent of the size of the exhaust wall/spray booth