All flaps have the same length, and the two outer flaps (normally the lengthwise flaps) are one-half the container’s width, so that they meet at the center of the box when folded. If the product requires a flat, even bottom surface, or the protection of two full layers, a fill-in pad can be placed between the two inner flaps. This is a highly efficient design for many applications. There is very little manufacturing waste. The RSC can be used for most products and is the most common box style.