These boxes provide twice the protection of a standard carton. Boxes are manufactured from heavy-duty ECT-48 kraft corrugated. Heavy-duty construction provides greater protection and stacking strength. Manufactured from heavy-duty 275# D.W./ECT-48 kraft corrugated. Heavy-duty construction provides greater protection and stacking strength. Cartons are sold in bundle quantities and ship flat to save on storage space and shipping. Heavy-Duty Corrugated Shipping Box: 26" Long, 26" Wide, 26" High 2 Walls, Kraft (Color), 100 Lb Capacity, Overall Width (Inch): 26 , Shipping Boxes Type: Heavy-Duty Corrugated , Overall Width (Decimal Inch - 4 Decimals): 26.0000 , Overall Length (Inch): 26 , Overall Width: 26in , Overall Height (Inch): 26 , Overall Length (Decimal Inch): 26.0000 , Overall Height (Decimal Inch): 26.0000 , Overall Length: 26in , Container Shape: Square , Load Capacity (Lb. - 3 Decimals): 100 , Overall Height: 26in , Color: Kraft , Number Of Walls: 2 , UNSPSC Code: 24112500