Cardboard boxes are most economical when run in large quantities. Stock boxes and corrugated inventories which are held and released as needed are limited to certain sizes and are priced less than a custom box made to exact specifications. Stock shipping boxes are manufactured and produced in much higher quantity runs which drives down cost. The cardboard box inventory held in our inventory are bundled in varying quantities depending on the dimensions and footprint of the box. Not all large boxes will ship UPS or Fedex, many of which require transport by an LTL carrier or Motor Cargo freight line. Packagewarehouse.com has several hundred sizes and styles of corrugated packaging products available for immediate shipment. Our selection consists of, bankers boxes, file boxes, storage boxes, boxes for moving, military packaging, white boxes, gaylord boxes, and many other types of boxes for sale.