My closet has an 8' ceiling. Heres the deal: Its an old house that has had central heat and a/c (among other things) added onto it. One air duct running upstairs actually comes up through the floor from outside and goes upstairs to the master bedroom. I see that as a good way to induct cool air with a fan. Rather than venting into the attic, what about drilling another hole in the floor and venting into the crawl space under the house....I know that heat rises and this is a natural contradiction but it should still be possible with an exhaust fan. I realize this setup is small but I dont see the difference between this and those grow cabinets that you see people building. Difference is, its slightly more permanent....I realize that heat is an issue but I have enough options for ventilation....any suggestions/ comments are greatly appreciated. Thanks guys!