These Air-o-lite windows are very difficult to find. The are aluminum on the exterior with some steel parts on the interior. Most of the windows apprear to be complete with all hardware. Some have cracked or missing glass. The individual glass panels with aluminum frames are 18-1/4 in. wide x 9 in. high. Windows may vary slightly from photos but all are in comparable shape. These window were cut out with a saw (as per photos) so to re-install the window the rivets will need to be drilled out. If you order this part # we will ship the nicest window first. If you have specific questions, please give us a call at 765-473-8088.