C9 Envelope Paper is one of the envelope paper sizes within the C series that is standardized by the ISO 269 international paper size system. C9 Envelope Paper can hold an A9 piece of paper. C9 Envelope Paper is half the size of the C8 Envelope Paper.
C9 Envelope Paper has a width of 1.57” (40 mm) and height of 2.24” (57 mm). The surface area of C9 Envelope Paper is .02 ft2 (.002 m2).
C9 Envelope Paper is one of the envelope paper sizes within the C series that is standardized by the ISO 269 international paper size system. C9 Envelope Paper can hold an A9 piece of paper. C9 Envelope Paper is half the size of the C8 Envelope Paper.
C9 Envelope Paper has a width of 1.57” (40 mm) and height of 2.24” (57 mm). The surface area of C9 Envelope Paper is .02 ft2 (.002 m2).