Box sizes are measured by using inner dimensions unless otherwise specified. The size of your contents actually determine the inner box dimensions. Domestically (within the United States), those dimensions are listed in the following sequence: Length (L) x Width (W) x Depth (D)*. Internationally, the dimensions are stated as Length (L) x Breadth (B) x Height (H).

Dimensions are based on the opening of an assembled box. Looking at the opening, the longer of the two sides is considered the “length.” The shorter of the two sides is the “width.” The side perpendicular to the length and width is the “depth” of the box.

Corrugating is defined as the imparting of wave-like shape to a paper. Depending on the strength properties required, different types of flutes are used. Generally four different types of flutes, known as A,B,C and E are available.