Duplex Board 300/350/400GSM Paperboard
Packaging that needs to print well on one side and stay structurally sound on the other has a specific paperboard built exactly for that job Duplex Board. At AMS Papers, we stock it for retail customers working on individual packaging or design projects, and for wholesale buyers packaging manufacturers, print shops, converters who need consistent supply for ongoing production.
The name comes from its construction: duplex board is made with two distinct layers, each doing a different job. The front side is coated and smooth, engineered specifically for crisp, high-quality printing, while the back side comes in your choice of grey back, white back, or kraft back, depending on what the finished product needs to look or feel like once it’s printed, folded, and assembled. That two-sided construction is what makes duplex board the standard choice for folding cartons and printed packaging strong, structural board on the inside, print-ready quality where it counts.
We carry it in 300GSM, 350GSM, and 400GSM, giving you the flexibility to match thickness to the job. Lighter 300GSM works well for smaller cartons and packaging that doesn’t need heavy structural support, while 350-400GSM gives you the rigidity needed for larger boxes, premium packaging, or anything that needs to hold its shape under more weight or handling. Each weight comes with a coated finish gloss or matte so you can choose the look that fits the brand or product you’re packaging.
It’s genuinely production-ready across multiple printing methods, supporting offset, flexo, and UV printing, which means it slots into whatever production line or print setup you’re already running rather than forcing a workflow change. Standard sizes of 70×100cm, 79×109cm, and 65×92cm cover the most common packaging and converting requirements, with the flexibility to discuss other formats for larger orders.
Buy Duplex Board 300/350/400GSM
Buying from AMS Papers: Duplex board is available as a smaller retail quantity for individual packaging or design projects, or as a full wholesale order for packaging manufacturers and print shops running regular production. Per-sheet pricing improves the more you order so if you’re sourcing board for ongoing carton or packaging production, it’s worth checking our wholesale rates before committing to smaller, repeated purchases.
Key Features & Specifications
| Specification | Detail |
|---|---|
| Product Type | Duplex Board (Paperboard / Folding Carton Board) |
| Ply | 2 layers (duplex construction) |
| GSM Options | 300GSM, 350GSM, 400GSM |
| Thickness | Approx. 0.25–0.75mm (varies by GSM) |
| Front Side | Coated, smooth, printable |
| Back Side Options | Grey back, white back, kraft back |
| Finish | Gloss or matte coated |
| Printing Compatibility | Offset, flexo, UV printing |
| Standard Sizes | 70×100cm, 79×109cm, 65×92cm |
| Buying Options | Retail quantity or bulk wholesale — competitive pricing on both |
Frequently Asked Questions
1. What’s the difference between grey back, white back, and kraft back duplex board?
The back side affects both appearance and cost grey back is the most economical and common for general packaging, white back gives a cleaner all-around finish useful when the inside of a carton is visible, and kraft back has a natural brown paper appearance often used for a more rustic or eco-conscious packaging look.
2. What GSM should I choose for my packaging project?
It depends on the structural demands of the job 300GSM suits lighter cartons and packaging, while 350-400GSM is better for larger boxes or packaging that needs more rigidity and durability under handling and weight.
3. Is duplex board suitable for offset printing, or only specialised equipment?
It’s compatible with multiple printing methods, including offset, flexo, and UV printing, so it fits into most standard commercial printing and packaging production lines.
4. What’s the difference between gloss and matte finish on duplex board?
Gloss finish gives a shinier, higher-contrast look that makes colours appear more vibrant, while matte finish gives a softer, more understated appearance the choice usually comes down to the branding or aesthetic the final packaging needs to achieve.
5. What sizes does duplex board come in?
Standard sizes include 70×100cm, 79×109cm, and 65×92cm, covering most common packaging and converting needs, with other formats available to discuss for larger or custom orders.
6. Can I order duplex board in bulk for a packaging or print business?
Yes AMS Papers supplies duplex board for both retail customers working on individual projects and wholesale buyers running ongoing packaging or print production, with pricing that improves the more you order.
