A blank is scored and slotted to permit folding. A joint is formed at the point where one side panel and one end panel are brought together. The boxes are then shipped flat to the user. Flaps, extending from the side and end panels to form the top and bottom, are closed and sealed by the user. Easily the most popular shipping container style.
All flaps are the same depth, and their depth equals the width of the box.
When closed, the outer flaps come within one inch of a complete overlap. All flaps are the same depth, and the outer flaps overlap by one inch or more. This type is useful when the box length is much greater than the width, resulting in a large gap between the inner flaps. The overlap provides additional puncture protection over this gap. This style is similar to an RSC, but with only one set of flaps.