Storage box is ideal for stacking and storing computer printout binders for archival purposes. Heavy-duty, triple-end, double-side, double-bottom construction offers maximum stacking strength that's built to handle the weight of heavy bound reports. Storage boxes are built for heavy daily usage and maximum stackability. Ideal for stacking without shelving. Reinforced, tear-resistant hand holes make box comfortable to carry. FastFold One Step Setup makes box assembly fast and easy. Deep, locking liftoff lid stays in place for secure file storage. Storage boxes withstand up to 850 lb. of stacking weight.