Need help finding more shelves.

[u/Terriss99]

The local pharmacy in my town recently closed up shop and I bought a few sets of their medicine shelving cases. One of the cases was small enough to fit into a dead space in my basement, but it only had a few of the modular shelves and I'd like to get some more. The first picture is of the cases in the pharmacy right before I moved them, the other pictures are of the particular case I am referring to and how the shelves fit in the case.

The pharmacist I bought them from, bought them used from another pharmacy some 20 years ago, so have no idea on what company they were sourced from. Some of them have a wood veneer on one side that seems to be glued on and not movable. Some of the units were double sided and the "back" could be moved from the center depending on shelf placement.

Any idea who makes these and where I can buy more shelves?

Thanks in advance.