What size is your room? To find out what size you need just multiply L x W x H = cubic feet divided by 5 and that will give you min cfms needed remember that adding filter will cut that down by at least a 1/4 of your cfms going big is never a bad thing
Hey man I cant find that website? Help? I want the vortex stuffIf you have an extra 60 bucks you can get a Vortex 6" 449 cfm with a 20" filter all for 260.00 at thegardendepot.com its the cheapest ive found and heard the Vortex fan is numero uno! There is great deals at that site hope this helps!