Bankers Box SmoothMove Classic Moving and Storage Boxes feature easy set-up-no tape required for box assembly. Convenient lift-off lid. Easy to carry handles. Durable, double end, double bottom, 32 ECT B-Flute Kraft corrugated board construction. Reusable and recyclable. Perfect for use in the office, home, school, or wherever you would like to move and store important papers, documents or any items. Box/Tube: Moving Box; Box/Tube Design: Half Slotted Container (HSC); Size Type: Large; Length: 21".