I agree with dan on the fans, I have two 120mm ice cap fans located on each side of my canopy, will be going on two yrs in 2 weeks. I just bought two more last week to add to the top for extra heat exchange. ice cap changed the design they aren't as thick, looks to be the same motor. I also need to see if it outputs the same cfm's, the new ones say up to 102 cfm's I knew the current one's i have are 100 something 102 does sound correct tho.