21 3/8 x 15 5/8 x 6 3/8' Corrugated Boxes. These sizes are used in the garment industry for shipping and storing clothing. Pack clothing with or without hangers. Boxes are manufactured from 200#/ECT-32 kraft corrugated. 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!