yea, the fan pulls threw the hood and scrubber.... i also have 2 fans helping the intake so i can pull in cool air from my houses A/c...took me a while to get it set up where the temps sit at about 80 all day(in summer)
heres a diagram i made all stoned, hope it helps
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scrubber hood fan exhaust out
yep, Dr150, Altho there peices of shit, zipper is a fucked up, been that way for a while...but, i have a 6" vortex pulling threw a charcol scrubber and my hood, ducting lined with ona gel, went out the window, now goes out the roof.