Miller Supply’s stock Vari-Depth Kraft Boxes are 200 lb. test Regular Slotted Containers (RSC). These corrugated cardboard boxes are sold in bundles and furnished flat. All dimensions listed are inside dimensions. The first dimension is Length, followed by Width and then Depth. Vari-Depth boxes are pre-scored at intervals on the box. These boxes can be cut down to the needed creased height. Kraft Boxes are brown inside and outside.