As the title states.. with the door closed it reaches up to around 83-85* if the house is at a decent temp, even hotter if the ac is off during the middle of the day.. it gets to 100* easy everyday where I live and the back wall of the closet is connected to the garage wall(the oven of the house)... Anyways I open the door and leave it open for a while just to bring the temps down a bit, they stay around 73*-76* with the door open. I know 83*-85* isn't horrible but im really wanting to stay under 80*.. for intake I have a 80cfm inline booster fan(4"), and exhaust is a 250cfm booster fan (6") and for ventilation a 6" clip on fan. Room is 18.375 cubic feet. These temps are for 2 100w CFLs on.. after my seedlings get to about a week I plan to have all 4 on. At about a month ill put my 250w hydrofarm ballast and reflector CFL in, including smaller CFL bulbs for side/low lighting. This room is for a mother BTW. What are some ideas that you guys n gals have done to reduce heat in small closets?