When I move the bus. home I'd like to put in a couple of windows on the side wall of the room where I'll have the sign/laser shop. I'd prefer to use windows that I can place between the studs so as not to have to put in headers on the weight-bearing wall. Also would prefer that they be casement style that lift up to open. That way I can put an insert in the bottom of one to vent the laser rather than cut a hole in the wall. Anyone know of a company that makes off-the-shelf windows for 15" width rough opening?