Re: com\'on, somebody!!!!
I reread it and found a fault,you only have 3 sides but is the open wall open to air or on the back wall?If it's open to air which I belive is wrong there's a serious prob.If it's the intake/exhaust wall as I take it you're relying on a suction to clear the room instead of some kind of cross flow.If the intake and exhaust are working off the same room there is no intake,it's vacuuming the room and the booth so your intake is anyplace air can come from.