Heavy-Duty construction and Multi-Depth style provides greater protection and stacking strength combined with flexibility. Multi-Depth style cartons offer the benefits of having many box sizes in inventory without using up valuable storage space. To obtain the desired size container, simply cut down to the pre-scored interval on the sides of the box. Manufactured from Heavy-Duty 275#/ECT-44 singlewall kraft corrugated. 40% stronger than standard shipping containers. Sold and shipped flat in bundle quantities.