ok you want to cut 3 holes for a closet like that. one at the top left, one at the top right, and one in the bottom middle. so 2 exhausts, and 1 intake(fresh air). twist them all into the same extension cord too. real easy. the 2 on the back top will suck the hot air out, and the one on the back bottom put in going the other way so it blows fresh air in. no one will see the holes either because they are against the wall. pc fans are quiet too.