DIN 678-2 Envelopes - Part 2: Envelopes for processing in enveloping machines, size C6 to C4
DIN ISO 2768-1 General tolerances; tolerances for linear and angular dimensions without individual tolerance indications; identical with ISO 2768-1:1989
DIN 680:2008 history
2008DIN 680:2008-02 Window envelopes - Sizes and position of the window
2008DIN 680:2008 Window envelopes - Sizes and position of the window
1995DIN 680:1995 Window envelopes - Sizes and position of the window