This standard slotted carton comes in plain kraft, in constructions from 3-ply to 9-ply, and is made to the size the packing line needs. The brown box opens with four top flaps that meet at the centre, and the corrugated walls fold square at each corner. It serves general shipping and storage of goods from packing lines, with the ply count chosen from the 3-ply to 9-ply range.