Quote Originally Posted by pudder
What I did was had a 8" extraction point and 4 - 4" intakes. 2 on each side of the box. and one with a blower that is 5 inches.
Wait. How does it make sense that the area of exhaust be smaller than the area of a passive intake? If you want a consistently one directional intake, doesn't it make sense to have more exhaust than intake? As your passive intake holes get bigger the strength of intake decreases, right?? I feel like I'm taking crazy pills here!

(Also remember: an increase in a circle's diameter increases the circle's area exponentially. So, a 8" hole is not double the size of a 4" hole, but closer to quadruple the size.)

Peace.