Ok i think i understand what you are trying to do. You want to use the top shelf of a closet for your grow area? If thats the case am not too sure that you can do much with that space, first off you'll need more vertical grow space than that .... you only have 22" to play with plus you still need room for a refector. Which to be honest i dont even thing you need a refector for that small of a space just line it with mylar. That sif you figure out away to do this. But good luck