I've got a jerry-rigged Lasko floor fan for my exhaust right now, supposedly puts out 430 CFM, in my small walkin closet grow (3'x6'x8') with a 400W HPS/MH. I'm looking to upgrade my fan, as my temps are lingering around 91 degrees, but I live in an apartment so I don't want a fan that will rattle my walls, but I also don't want to spend a small fortune as I'm fighting a possession charge right now. Any suggestions?
These are suppose to be some of the quietiest fans and move a large amount of air... Sunleaves :: Sunleaves WindTunnel
Also check out Soler & Palau TD-MixVent fans. They have a reputation on the boards of being quiet but powerful as well as small and well built. I just ordered a TD-125, TD-150, and TD-200. Hope they live up to their rep. They are cheapest at Vetning Direct or HVACQuick