Quick answer
GC1 and GC2 are both widely used folding boxboard descriptions, but they serve different visual and commercial needs. GC1 is generally specified as white back FBB; GC2 is generally cream or unbleached back FBB. The right choice is the one that meets the carton’s visual, structural and cost requirements after printing and conversion.
Do not approve either grade only by a label. Board naming can vary by mill, and a buyer should confirm the product data sheet, reverse-side appearance, thickness, stiffness, print face and intended end use.
The visible difference
The reverse side matters whenever it is visible inside the carton, used for reverse printing, or part of a premium unboxing experience. A white back can support a brighter inside surface and more consistent reverse print. A cream back is often appropriate where the reverse is hidden or where the brand accepts a warmer, more natural appearance.
Comparison table
| Decision factor | GC1 / white back | GC2 / cream back |
|---|---|---|
| Inside-carton appearance | Bright, clean visual | Warmer, less bright visual |
| Reverse printing | Often a stronger starting point | Confirm result on press |
| Typical use | Premium retail, pharma, cosmetics | Mainstream cartons, hidden interiors |
| Selection rule | Choose when both sides matter | Choose when front-side performance drives the brief |
How to write the RFQ
State whether the back is visible, printed or subject to colour approval. Add the required shade or a signed sample where colour is critical. Define the carton dimensions, basis weight or caliper, grain direction and relevant conversion conditions. This turns “GC1 vs GC2” from a naming question into a measurable procurement brief.
Planning a paper or board order?
Send us your application, format and target specification.
Send your requirementsPractical approval note
For a colour-sensitive project, compare samples under the lighting used for print approval and retail display. Check the reverse after varnish, glue and any foil or embossing operation—not just as an unconverted sheet.
FAQ
Is GC1 always better than GC2?
No. It is usually a better fit only when a white reverse supports the required appearance or print result. The finished pack and approved specification should decide.
Can I use a GC2 substitute for a GC1 carton?
Only after reviewing the change against the agreed appearance, structure and application. Similar GSM does not establish equivalence.