Automatic setup storage box helps you get organized faster. The box is built with extra strength & durability for your moderate stacking & storing needs. The smooth rolled edges add strength, help prevent paper cuts, & allow for easy sliding when stacking. A convenient lift-off lid allows easy access. The built-in handles make it easy for transport, storage, & stacking. Box Type: File Storage; Box Style: Easy Assembly; Strength: Medium-Duty; File Size Format: Letter / Legal.