Ok

    This is my last question. About building your own spray booth. I got an blower exhaust fan the same type that TRYINTOMODEL used in his construction it is even the same 265 CFM.

So here is my question how do you mount it to the back of the booth? Because when I try the outlet flange gets in the way.

    Also, the reason I didn't get the 495 CFM even though it was only $10.00 more at a local garden center was that it weight a lot more then the 265 CFM.

     Also according to my calculations the biggest crossdraft booth I can have is a 18" height, and 24" width.... so doing the math 1.5 X 2 X 80 cfm face value = 240 cfm.... the ducting I'm using is flex ducting at 4" but the booth will be right next to the window so it will only be going a foot or two. 

So how does this sound to anyone out there?

Especially Styrene who seems to have a lot of knowledge of this subject.

Thanks in advance....

Scott