Cardboard Box Measurements Explained
Box measurements always correspond to the inner dimensions of the box. This is done to ensure a snug and protective fit around your item(s).
Boxes are measured according to their inside dimensions. That means that I a box is 16 x 12 x 12", you are able to fit an item that is 16 x 12 x 12" inside that box.
Boxes are always measured:
Length x Width x Height (Depth)
Dimensions are expressed in inches.