Some years ago we had some flat files custom made to accommodate a map that was 98” long.

Burroughs was doing a large shelving project for us on a grant project, and this was part of it.

I was not involved in the ordering and have no idea of the cost (except if you have to ask, you can be sure it’s not cheap!).

But that’s where I learned that you can order custom storage pieces from an industrial shelving vendor.