This document gives specification for window envelopes (envelopes form U, envelope as a bag form T as in DIN 678 part 1) for dispatch of correspondence form according to DIN 676.#,,#
DIN 680:1995 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