How do you measure a Carton

Step.1 : The first dimension to measure is length. Length is always the longest side of the box that has a flap.
Step.2 : The next dimension is width. The width side also has a flap, but is always the side shorter than the length.
Step.3 : The last dimention is height of the package. Height is the only dimension without a flap.
Note : When measuring a box the dimensions are given in the following order : L x W x D or L x W x H