we use these for resident files. Lots of different personnel use them and the files hold up under constant use (even when shut in a file drawer) Years later they are still in good shape. Files are kept indefinitely.
We use these as project folders. The partitions enable us to organize the documents by category (e.g. purchase orders memos invoices supervisor reports etc); and we don't have to worry about loose papers falling out of a folder or being misplaced.