Electric fan controller

1400 CFM is not enough, is that each or combined? you need to be able to pull at least 3000 CFM or it will overheat

actually i had my #'s wrong. they are 1650 cfm ea. here are the specs. copied and pasted right from the web site.

1650 cfm
8 Amps
Dimensions:(A) 14.125"
(B) 14.625"
(C) 4.000"
(D) 1.250"