C9 Paper Size Dimensions
C9
40 x 57 mm
A C9 piece of paper measures 40 × 57 mm or 1.6 × 2.2 inches. Cutting it in half will create two C10 sheets of paper. C9 is part of the C Envelope series.
A C9 piece of paper measures 40 × 57 mm or 1.6 × 2.2 inches. Cutting it in half will create two C10 sheets of paper. C9 is part of the C Envelope series.