The inside width and the inside length shall be determined by measuring the respective panels of the carton opposite from the manufacturer's joint. These measurements shall be taken at a point approximately one-half the depth of the container. The depth shall be determined by placing the bottom flaps firmly in a closed position, without crushing them, and then measuring vertically in the corner opposite from the manufacturer's joint from the upper side of the bottom inner flap to the underside of the corresponding top inner flap. The top inner flaps also must be in a closed position. When measuring a telescope-type container without the lid in place, measure from the upper side of the bottom inner flap to the edge of the top of the carton.