Strong cardboard boxes made from double wall cardboard. Internal dimensions: 430 x 240 x 365mm (17 x 9.5 x 14.5 inches). Pack Of 25. Double wall cardboard boxes are manufactured from two sheets of corrugated cardboard which are securely glued together. The extra layer of corrugated cardboard cushions any impact whilst keeping the box intact. These boxes offer superior strength and reliability to customers interested in shipping or storing heavy loads, and when stacking is required. Supplied flat packed - make them up by taping the flaps. Standard brown cardboard colour inside and outside. For clients looking to purchase in bulk, we offer affordable wholesale pricing and discounts.