Kraft or RSC Boxes, RSC means regular slotted cartons, are the cornerstone of corrugated shipping boxes used in cost effective packaging and shipping solutions. These types of boxes are the what you receive most of your delivered packages in at your home. 3D Corrugated has a wide selection of standard and odd lot sizes for your packaging and shipping needs. This box is sized, 20 X 12 1/2 X 16 1/2" Corrugated Box, with a test strength of 32 ECT. All items in our odd lot list are special buys and may not be available after they are sold out.