Boxes for shipping are manufactured from sturdy and durable corrugated cardboard, which consists of three different sheets of container boards, with fluted material glued between two flat layers of paper. This ensures that the contents of the box are secure and well-protected. Our standard shipping cartons range in size from 4 x 4 x 4″ to 48 x 40 x 36″. The vast majority of the boxes we sell are made from 32 ECT lightweight C flute corrugated material, the industry standard. However, we also offer a variety of heavy-duty boxes for customers who require extra protection and resilience. With over 1,200 sizes of corrugated boxes, we are certain to have one that meets your requirements.