Pack items for shipment in this United States Post Office Shipping Box. The corrugated cardboard box is built to stand up to the journey. Ideal for shipping smaller items. Made of corrugated cardboard to withstand rough handling. Boasts an edge crush test (ECT) rating of 32. Tested to support a weight capacity of 200 lb per square inch. Can be cut and adjusted to 8" x 8" x 6" or 8" x 8" x 4" to accommodate items of a variety of sizes.