This is a factory metal case window The bottom part of the window is functioning and the top part is stationary as a transom The top part measures 24 x 39 w and the actual windows are approximately 36 1/2 tall by 39 w . You can see through the years the class had been replaced with fiberglass panels. You can see on the inside on the bottom what appears to be a small arm that would cascade out is missing on the right side . The windows are in rough condition but would be ever so worth restoring this is the first time we have ever been able to salvage windows like this . This auction is for one window with over 15 in stock