Bankers Box DIVIDERBOX Medium-Duty Storage Boxes with Dividers, FastFold, Lift-Off Lid, Letter, Case of 12 (0083101) Dividers prevent files from falling over FastFold quick and easy assembly Five, 5" dividers keep files upright even when box is partially full Medium-duty, double end, 1-1/2 side, double bottom construction for use with or without shelving Deep, locking lift-off lid stays in place for secure file storage