Nice cheap display cases built very reasonably...He builds an L like channel out of wood and uses that for the middle section of plastic for his sliding door. Click on the view original to see the close-up of the picture. The legs are just for decoration, as all the weight is supported from the metal brackets under the shelves, supported on those metal wall brackets.

This was from the Paulson museum located in Caledonia, Ill. Just off Illinois 73 west of loves park Ill. (Rockford)

Mr. Paulson told me he got tired of having pieces missing and dusting all the time. He is a nice collector in his 90's now...