Products PhotoThe Regular Slotted Box is the most common carton boxes in today’s market. The average shows over 50% of product shipped by Regular Boxes. They all are made from a one-piece corrugated sheet. The Regular Slotted box has four flaps on top and four flaps on bottom; all flaps are the same length. The two outer flaps meet at the center of the box and the two inner flaps meet at the square carton.