Medium-duty, standard set-up boxes that are great for storage of letter or legal files. Ideal for stacking and storage on shelves. Lift-off lid allows for semi-active use to add and remove files as needed. Equipped with two built-in side handles for easy transport and storage. The easy assembly boxes can be put together without packaging tape. Collapsible and reusable. Made of corrugated cardboard with 350-pound stacking strength.