I had an old 6 pane window sash with no glass I saved from a chicken coupe that went down in a big snow. I decided to size it down to a 4 pane so it would fit in the door I needed to make for the garage. That went well (still needs glass) so I took another sash, with glass, that I had and did the same for the other door. The doors I made from reclaimed Douglas Fir 2x6 rafters. Nice stuff!. The inner panel is 1x6 beaded barn t&g. The best part was all materials, including the Timberlocs (bolts), hinges, and even paint I already had. I only had to buy the thumb latches, $25@