
Top decks: they are more or less spaced out. One speaks then about
percentage of coverage: full surface with regard to the total
surface. The space between these decks can be regular or irregular.
Top sight

spaces out decks more or less regular

The top
decks of the same pallet have quite the same length and the same
thickness, but it can have different widths. One distinguishes
in that case several types of top decks (rarely more than 2) for
the same palette.