12" x 9" x 3" RSC Kraft Corrugated Box
25 Boxes per Bundle

The term “corrugated” refers to a specific type of material that is actually composed of three different sheets of container board, which are basically like thick paperboard. The two sheets on the outside are flat liners and the sheet in the middle has a rippled shape. The abbreviation RSC means Regular Slotted Container. RSC boxes have four flaps that meet in the middle and are taped closed. The two outer flaps are usually half the width of the container and meet in the center when the box is closed.