At Douglas Johnstone Paper Products in Montreal, we supply a wide range of used boxes to help minimize wastage and provide you affordable storage solutions. Before determining what size is required, see below for industry standards on measuring cardboard boxes. Without exception, the size of a corrugated cardboard box is always expressed by three dimensions: length, then width, then height (also called depth).
These measurements refer to the inside dimensions of the box. The length is the larger dimension of the box's opening. The width is the smaller dimension. The height is perpendicular to the opening.