Q.1086: What is C4 sheet size?, What is iso c4?
Ans. The C series is used for folders, post cards and envelopes. C series envelope is suitable to insert A series sizes.
As per ISO (International Standard Organization) C series cut sheet sizes, C4 is 229 mm wide and 324 mm long sheet. Equivalent size in inches is 9.02" wide and 12.76" long.
For all ISO and US sizes, click here