Oh yeah, i have two Can-fan HO 6" fans. I don't remember the CFM's. One is dedicated to the light,( attic air through the light and out the side of the HUt) The other one sucks air into into a 70lb carbon scrubber in the attic. Fucker is heavy man! The temp stays at about 70 pretty regularly but the summer is approaching so we will see.... i have a huge air conditioner so i should be ok.