Double-walled construction on all panels increases stacking & carrying strength. Quick & easy assembly lets you get organized quicker. Lift-off lid allows for semi-active use to add & remove files as needed. Equipped with two large tote side handles for easy transport & storage. Designed to stack two on a shelf. Smooth rolled edges eliminate paper cuts & make stacking & sliding easier. Collapsible & reusable. Made of corrugated cardboard with 500-pound stacking strength. Box Type: Stackable File Storage; Box Style: Easy Assembly; Strength: Medium-Duty; File Size Format: Letter.