Universal Fixed-Depth Brown Corrugated Shipping Boxes, Regular Slotted Container (RSC), X-Large, 12" x 18" x 6", Brown Kraft, 25/Bundle

Sturdy and economical 200-lb test corrugated Kraft boxes. Heavy-duty ECT-32-C Flute corrugated material. Shipped flat, they assemble easily with shipping tape (sold separately).