Prouboy...what a great way to store maps. Right now I just have my maps folded and stored in large 2 gallon ziplocks put away in my basement.  I put maps for every trip inside a clear ziplock and then put them inside my mapcase to keep dry while tripping. When I get home, I take the maps that are inside the ziplock and remove from my mapcase and put them in a pile in my basement. Hanging them on the wall looks to be such a better way of storing them. Kudos to your inventor bud.