Overlap Slotted Carton or OSC in short, is a type of carton that widely use in a furniture industries. All it flaps are same in depth & their depth is equal to the width of the carton. When closed, the outer flaps come within one inch of a complete overlap. This style is especially resistant to rough handling. Stacked on its bottom panel, the overlapping flaps provides added cushioning. Stacked on its side, the extra tickness provides stacking strength.