Rigid Gift Box Greyboard Thickness: Choosing 1.5, 2.0 or 2.5 mm by Product Weight and Size
Quick answer
As a typical starting point, use 1.5 mm greyboard for small, light rigid boxes (roughly under 500 g of contents), 2.0 mm for mid-size gift boxes and sets (roughly 0.5–1.5 kg), and 2.5 mm or more for large boxes, bottles and heavy sets. Box size matters as much as weight: a large, light lid can need thicker board to stay flat. Confirm the choice with a filled sample.
Quick facts: Custom Luxury Gift Boxes Manufacturer
- Indicative unit price: from about US$0.50 per box. This is a guide, not a quotation: the final price depends on size, material, print colours, finish and order quantity.
- MOQ: typically from 500 pcs per size and artwork; the confirmed minimum depends on material, print method and features and is stated on the quotation.
- Lead time: Physical samples 5–7 working days after artwork is confirmed; bulk production 20–30 days after sample approval.
- Who makes it: BestPackFactory’s own factory in Longhua District, Shenzhen, China. Free dieline and artwork proof within 24 hours. See real samples and videos.
- Specifications and quote: Custom Luxury Gift Boxes Manufacturer · Request a quote
What greyboard thickness controls
A rigid box is a greyboard core wrapped in printed or specialty paper. The board thickness (caliper) sets how much the walls and lid flex under hand pressure, how well the base resists sagging when the box is carried, and how solid the box feels when opened. The wrap paper adds very little stiffness, so the board does almost all the structural work.
This guide answers one question: which thickness to choose. For an overview of rigid box styles and wrap options, see how to source custom rigid boxes.
Starting-point table by weight and size
| Contents weight (rough) | Box size (longest side, rough) | Typical greyboard | Examples |
|---|---|---|---|
| Under about 500 g | Up to about 200 mm | 1.2–1.5 mm | Jewelry, small cosmetics, cards, accessories |
| Under about 500 g | Over about 300 mm | 2.0 mm or more (to keep large panels flat) | Apparel, scarves, flat gift sets |
| About 0.5–1.5 kg | About 150–350 mm | 2.0 mm | Skincare sets, candles, tea and chocolate sets |
| Over about 1.5 kg | Any | 2.5–3.0 mm | Wine and spirits, electronics, multi-bottle sets |
| Glass bottle sets or carried by a handle | Any | 2.5 mm or more, with a structural insert | Spirits gift boxes, hampers |
These ranges reflect common industry practice, not a standard, and different suppliers draw the lines slightly differently. Greyboard density also varies between mills, so two boards sold as “2.0 mm” can feel different. Ask for the actual caliper and board grade to be confirmed in the quotation and on the sample. North American quotes often use points: 1.5 mm is close to 60 pt and 2.0 mm close to 80 pt.
Factors that change the answer
- Panel span. Flex grows with unsupported width. A 400 mm lid made from 1.5 mm board can bow even when nearly empty, so large boxes often need 2.0 mm or more regardless of weight.
- Insert support. If a well-fitted insert (card, EVA foam or pulp) carries the product and braces the walls, the box itself can often use thinner board. A loose product in an empty box puts all the load on the base and corners. The insert and inner tray guide explains insert options.
- Closure style. A magnetic flap lid relies on the board staying flat so the magnets meet evenly, and magnets are normally recessed into the board. A two-piece lift-off lid needs a consistent fit between lid and base walls. Compare the structures on the magnetic rigid box dieline and two-piece gift box dieline.
- Small boxes and corners. Thicker is not always better. On a small box, very thick board gives rounder, blunter corners and puts more strain on the wrap paper at the folds, which can show on dark solid colors.
- Collapsible (flat-pack) boxes. Foldable rigid boxes need hinges that bend cleanly; very thick board can make folding stiff, so the supplier may recommend a specific caliper.
- Mixed thickness. It is common to use thicker board for the outer shell and thinner board for inner trays or dividers to save weight and cost.
- Shipping. Rigid boxes are usually shipped inside an outer corrugated carton. If the gift box will travel through courier networks with little outer protection, plan for thicker board and test.
How thickness affects size and cost
Thicker board increases outer dimensions (each wall adds its caliper plus wrap), increases box weight and therefore freight, and raises material cost. The step from 1.5 to 2.0 mm is often modest in unit price but can be noticeable on large boxes and long-distance shipments. Always give inner dimensions so the supplier can calculate outer size for the chosen board; the exact cost impact is confirmed in the quotation.
How to test the chosen thickness
- Fill the sample with the real product, including insert and any leaflet.
- Press the center of the lid and long side walls with a thumb; look for visible dent or bow.
- Lift the closed box by one end and by the lid (if customers will do that) and check the base for sagging.
- Open and close the lid repeatedly; check that magnets meet and the lid sits flat.
- Pack the boxes in the planned outer carton and do a simple drop and corner check before approval.
What to send in your RFQ
- Box style (magnetic, lift-off lid, drawer, book-style) and inner dimensions.
- Total contents weight and whether glass is included.
- Insert type, or a request for a recommendation.
- Preferred greyboard thickness, or “please advise”.
- Wrap material and finishes.
- Shipping method and whether boxes travel inside an outer carton.
- Quantity (MOQ 500 PCS).
See custom rigid boxes and luxury gift boxes for styles.
Common mistakes
- Choosing thickness by weight alone and ending up with a bowed lid on a large, light box.
- Comparing quotes that list board in different units (mm, pt or gsm) without confirming the actual caliper.
- Upgrading board thickness instead of fixing a loose insert.
- Sending outer dimensions measured from a sample made with a different board, so the new box is a few millimeters off.
Frequently asked questions
What is the most common greyboard thickness for rigid gift boxes?
2.0 mm is a common choice for mid-size gift boxes. Small, light boxes often use 1.2–1.5 mm, and large or heavy boxes typically use 2.5 mm or more.
Does a heavier product always need thicker greyboard?
Not always. A well-fitted insert can carry much of the load, while a large but light box may still need thicker board to keep the lid and walls flat. Confirm with a filled sample.
Does thicker greyboard change the box size?
Yes. Each wall adds its board thickness plus wrap paper to the outer size. Give inner dimensions so the supplier can calculate outer size for the chosen board.
Is 1.5 mm greyboard strong enough for a magnetic box?
It is commonly used for small, light magnetic boxes. For larger lids or heavier contents, 2.0 mm or more is more typical so the lid stays flat and the magnets meet evenly.
Related pages
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