Heavy-Duty Multi-Depth Boxes, 30" x 20" x 20", Kraft, 10/Bundle 30 x 20 x 20" Heavy-Duty Multi-Depth Boxes. Heavy-Duty construction and Multi-Depth style provides greater protection and stacking strength combined with flexibility. Minimizes the impact of new UPS and FedEx dimensional weight pricing by eliminating empty space in boxes. 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. Boxes are manufactured from Heavy-Duty 275#/ECT-44 singlewall kraft corrugated. 40% stronger than standard shipping containers. Corrugated boxes are reusable and recyclable. Cartons are sold in bundle quantities and ship flat to save on storage space and shipping. Proudly made in the USA! CleanItSupply Heavy-Duty Multi-Depth Boxes, 30" x 20" x 20", Kraft, 10/Bundle