I have a window from a house that was being remodeled. It is a pretty common size of 20" x 64" x 1/2" thick, and fits mostly patio doors. It is still positioned in the plastic frame that was used to mount it, and the yellow tape is there by one corner to keep the frame from pulling away from the glass; you would probably need to remove the frame, but I kept it to protect the glass edges. I have at least two doors that this would fit, but I can't keep it forever. The pics show both sides of the window. If anyone has a door window that is broken, this is what is needed. It sells new for about $150 for just the glass. Asking $35.