Ergonomic design Presto handles are engineered for maximum comfort and reduced wrist strain. Instant assembly - just push corners together, and the box is ready for use. Heavy-duty, double-end, double-side and double-bottom construction for stacking, storage and transport you can trust. Deep, locking, lift-off lid stays in place for secure file storage. Secure, zip-tie closure for added security ties not included. Reinforced, tear-resistant hand holes. Box Type: Stackable File Storage Box Style: Presto Instant Assembly Strength: Heavy-Duty File Size Format: Letter/Legal.