Sofia Ramirez Design & Templates Editor at 4OVER4.COM
Sofia is our design and templates voice, built from the knowledge of our production team, with over 20 years in printing.
Question
What does C1S and C2S mean and what is the difference?
Answer
C1S and C2S describe how many sides of a paper stock carry a coating, a smooth clay layer that sharpens ink and color. C1S refers to a stock that is coated on only one side, while C2S is coated on both sides. The uncoated side of a C1S sheet stays more porous and matte, which is useful when one face needs to be written on or glued.
| Term | Meaning | Typical use |
|---|---|---|
| C1S | Coated one side | Packaging, labels, postcards, mailers, tent cards, pieces needing a writable or glueable back |
| C2S | Coated two sides | Double-sided cards, postcards, covers, and brochures printed and finished on both faces |
- Coating on a side means smoother ink holdout and sharper color on that face.
- C1S is a common pick for postcards and mailers where the back holds an address or a handwritten note.
- Choose C2S when both sides print with images or color, and C1S when only one side needs the polished look.
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