This listing is for a new 25-pack of generic 6x6x4 inch corrugated shipping boxes with a 32 ECT rating. These cardboard cartons are a practical choice for mailing, packing, and shipping small items. They are well-suited for small business order fulfillment, personal moving projects, or general storage needs. The standard size is useful for a variety of products, and the 32 ECT rating provides reliable strength for stacking and transport. Free shipping is included with your purchase. For full technical specifications and edge crush test details, please check the complete product listing. 25 Pack 6x6x4 32ECT Corrugated Shipping Boxes| Cardboard Mailing Packing Cartons. Condition: New. Listed at 21.87 USD. Durablesingle-wall 32 ECT corrugated cardboard box (6x6x4 in inside). 4"×6" photo prints (stack) or small notebook set. Corrugated box(es) only. Tape and void fill not included. Skincare minis/travel set: 50 mL cream + 30 mL serum + extras.