paint booth ventilation ???

[49 T&C]

I'm planning to add a spray booth in my shed and I look to this board as there is a lot of expertise here.

I was thinking of using a squirrel cage fan, as they move a lot of air. I'm concerned about paint/air mixture being passed across spark in the fan motor if I draw the air from the booth. The other alternative is force the clean air into (downdraft) the booth and force fumes out through filters.

Any thoughts on this?

Thanks,
49 T&C

[Jumper]

49 TC,
Most spray booths have a squirl (sp) cage fan as you are suggesting, but the motor is completely seperated from the air flow from the booth, it is in a air plenum with the shaft outside with a motor. The same for the lights glass or plexyglass windows with the fixture on the outside, with filters for the incoming air. Hope that helps
Jumper