At the local shop they sell three different sized squirrels. Small like 100 cfm, medium like 165cfm, and twice the size of medium 400 cfm. Ive got all three but only use the small for my scrubber and the medium for my 400 watt air cooled. Keeps temps nice and allows me to drop the light close. The price for them is like 80 for the small, 100 for med. and 110 for the large. These fans are a little loud with vibration and turbulence being my biggest concern. All and all they are working great, but I really don't have much experience with any other fans. Good Luck.
MULLETMAN Reviewed by MULLETMAN on . Duct fans I was wondering if anyone has used duct fans to power their exhaust. I am hoping to get one to put inbetween my growspace and my carbon filter. Does anyone have any tips or suggestions? Duct Diameter:.................... 4" Unit Weight:....................... 2.50 Lbs. Max Boosted CFM:............. 80 Free Air CFM:..................... 65 Amps:................................ 0.30 Housing Length:.................. 6" dBA:.................................. Rating: 5