Window Envelopes - Fensterhüllen
E65 - 110x220 mm, windows 30x90 and 30x95 mmE5 156x220mm, window 30x90 or 34x90 mm
C5 162x229mm, windows 35x95, 35x100, 45x90 or 60x95 mm (60x90 mm
E4 - 220x312 mm, windows 35x100 or 60x90 mm
C4 229x324mm, windows 40x100, 60x90or 55x90 mm