This window came out of a C5 Transport Aircraft, it was the pilots side window. This is not perfectly square, one end is about 18″ across and the other end is 22″ across, the length is about 30″ and it is about 1 1/2″ thick. This is a heavy piece with a thick piece of glass. This is a great man cave piece or maybe make a table out of it. Might never see another. Any questions please ask and I will do my best to answer them.