Nice cheap display cases built very reasonably. This collector used 3/16" plexiglass cut to the size he needed from a local plastic dealer and bought 1x6 or 8 boards and cut his own 2x2 frame. He used metal "L" supports below the shelves. He made a wood track system for the plastic to slide on and predrilled and screwed the doors shut so the public can't get into them easily. To open he removed one screw on the sliding door and was able to open.