This code which is prepared in collaboration with ESBO (The European Solid Board Organisation), contains a methodical presentation of all existing box design styles, a code number being assigned to each design. As a reference document, the code is used world-wide and it has been adopted by the United Nations.

Unless otherwise specified all dimensions are expressed as internal dimensions in mm as follows:

Length (L) x Width (W) x Height (H)
Length (L) the longer dimension at the opening
Width (W) = the shorter dimension at the opening
Height (H) -the dimension from the top of the opening to the base

The dimensions L W H are specified in each description of the case construction, for some models the numerical value of W can exceed the numerical value of L. Dimensions should be measured under standard climate conditions, on the flat blank from the centre of crease bearing the thickness of the material in mind.