I'm needing a new frame for 8x10 prints so I may hold off on getting one to see what you come up with.
I would think there would be a market for an 8x20 frame. It would also handle 7x17. I wound up getting an 16x20 frame for my 7x17 prints. It works fine of course but sure gives me a work out flipping it around. A smaller frame would be appreciated.