hey guys what do you think a good CFM is for a 48x24x60 (4x2x5) grow room? also maybe pros and cons of inline ducking fan like this
http://www.ebay.com/itm/4-inch-INLINE-DUCT-BOOSTER-FAN-exhaust-blower-cooling-/160632452339?pt=LH_DefaultDomain_0&hash=item256670b4f3
or the more common inline...