Bankers Box STOR/FILE Medium-Duty Storage Boxes, Quick Set-Up, Lift-Off Lid, Letter/Legal, Case of 12 (00789) 1-1/2 end, 1-1/2 side construction Medium-duty for moderate use with or without shelving Quick set-up assembly Deep, locking lift-off lid stays in place for secure file storage Rolled edges add strength and prevent paper cuts This items packaging will indicate what is inside and cannot be hidden. Bankers Box QUICK/STORE Recycled Storage Files with Locking Lid. Extra Strength - For moderate use and higher stacking needs. Quick and easy to set up, with moderate stacking strength for storage with or without shelving. The 35% deeper lift-off lid locks into place for high security storage. Smooth rolled edges add strength and help prevent paper cuts.