Strong dependable portable and stackable for on-site storage needs. Multi-layered corrugate with double bottom triple end and double side construction offers up to 80% more stacking strength than basic cubic foot boxes. 3 deep lift-off lid for high security storage stays attached until ready to use. Reinforced tear-resistant hand holes for easy and comfortable transport. Box Type: Stackable File Storage Strength: Heavy-Duty File Size Format: Letter/Legal Inner Width: 10 .