Many other manufacturers produce and sell several styles and size display cases. I have found that with a collection as large as mine, I waisted alot of money, because none of them fitted my needs. I designed and built these standing shadowbox style cases also. The box sizes are still 4" X 4", but I chose to display my ols Racing Champion NASCAR cars, stands, and cards in these. The top lifts up to remove a 2' X 4' piece of plexiglass, which also stopped the problem of dust. I also built the shadowboxes to hang on the wall.
Check out the link below and you may find something to fit your display needs.
www.amacbox.com
You can also get more display ideas on "My New Toy Room" page...