As I was bringing my new box into my classroom I dropped it. The corner hit the floor and several large pieces busted off the box leaving me with an estimated 4X4 hole in the corner.
These work well with hanging file folders. They stack nicely but don't stack them too high or they'll warp. Be very careful handling them in the cold too because the plastic becomes brittle and will fracture easily. At over seventeen dollars if purchased in store these are too expensive in my opinion but they do work and they do hold up better than cardboard.