These can be configured in 4' increments (6x6, 6x8, 8x8, etc). The panels are 48"H. We have enough inventory to do maybe 50 stations or so (depending on size and how they're configured). Even though drawers are not shown in all photos, we DO have drawer assemblies. We have some glass tops but not enough for all 50 cubes. SHELVES: Sorry, we are completely out of overhead shelves.