The only thing about the "1 fan in, 1 fan out" method is that you're only moving the same amount of air that one fan would move.
E.g., if the fans are rated 110cfm then you only get 110cfm through the hood. But if you direct both in, or both out (and vent for the other direction) then you get 220cfm through the hood.
Not saying it's wrong to do 1-in, 1-out, I have 2 hoods this way, but thought I would point out that about the fan directions because it is often overlooked.
__________________
-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
|