I just put in a 110 cfm fan from mouser, and now i have 2 fans 200cfm total, when you dont have the top on your case(hass) it sounds like a vacume cleaner, however when you do it gets to be just a hair louder than it was before, and now my projector runs 5* F hotter than ambient WOO WOO!, now even on hot days where its 85, i can still run my baby smile.gif

basically it doubled the suction with very little extra noise, and my case is air tight which is a must!