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