All of the flaps of a regular slotted container are the same length, and the lengthwise (normally outer) flaps meet at the center of the box. The space between the inner flaps varies depending upon the relation of the length to the width of the box.

Regular slotted boxes are in more general use than any other style because they are the most economical to manufacture and use and are adapted to the shipment of most commodities. Where the article requires the protection of two thicknesses of corrugated fiberboard over the entire top or bottom, fill-in pads may be provided between the inner flaps, or a center special slotted container (described below) may be used.