26x26x26 Double Wall Shipping and Packing Box - Cardboard - Double Wall Shipping Box 26 x 26 x 26" 1 Box per Order Extra Strong Double wall Corrugated Board All our boxes are produced right here in the USA 48 ECT 1/3" thick kraft corrugated board sustainably sourced and recyclable 6.7 Lbs each 48ECT double wall corrugated cardboard boxes are designed for the heavy lifting. These super durable Cartons can be used universally for various shipping applications via water, railroad, and air and even as moving boxes. Buy heavy duty cardboard boxes and double wall packaging boxes wholesale