CEN/TC 331/WG 4 - Physical characteristics and forms

The standard defines the physical characteristics of a disposable container for  letters and flats for exchange within Europe, to use a uniform postal container and to facilitate the exchange of letters within Europe. The dimensions of this "1 level" of container will constitute a first step of standardization. The following features will be defined: - inner dimension compatible with formats; - compatibility between trays and pallets dimensions; - rigidity; - impermeability; - closing; - sealing (optional); - positioning; - label's dimension; - number of cycle of use; - volume of folded containers.

This European Prestandard defines terms used on forms and in relations between postal operators and their customers.