Maximum durability boxes are engineered specifically for active files, harsh environments, and professional records management applications where reliable file storage is critical. The automatic, instant set-up that doesn't require tape, allows you to get organized quicker. Built with triple panel construction all sides to ensure maximum durability and dependability. 3" deep detachable, lift-off lid allows you to easily add and remove files when needed.Maximum durability boxes are engineered specifically for active files, harsh environments, and professional records management applications where reliable file storage is critical. The automatic, instant set-up that doesn't require tape, allows you to get organized quicker. Built with triple panel construction all sides to ensure maximum durability and dependability. 3" deep detachable, lift-off lid allows you to easily add and remove files when needed.