This standard applies to envelopes, with or without an address window, intended for sending letters, printed matter, forms, drawings and the like - made from the paper formats of the A or B series according to NEN 381;
——obtained as loosely cut leaves from continuous forms.
NEN 1025-1978 history
1978NEN 1025-1978 Envelopes - Sizes, windows, division of addresses and folding methodsfor documents