Yeah.....i actually tried that at one point GL and cant say I had good success without an intake. Yep it pulled air from the rest of the house.....and when it ran out of that it started pulling air from the attic. HOT air.

NOT impressive OR very cooling.
Weedhound Reviewed by Weedhound on . Can't get below 93 deg.......... Heres my setup....... Closet - 48" H x 20"W x 20"D Single Waterfarm w/ 6" airstone 6 x 42 watt CFL Ducted 4" intake and exhaust mylar covered walls ( mylar wrapped around styrofoam panels) The room the closet is in is air conditioned down to 70 degrees I have my temp gauge located about 4" under the lights.......Is that the wrong place????? I can't get the temp in the box any lower than 93 degrees and thats with the room down to 70 and the fans constantly going. What am I doing Rating: 5