Size guide
Getting Your Box Dimensions Right
Every box we make is built to your dimensions, so the measurement is the specification. This guide shows how to measure, how much clearance to add, and what tolerance to expect from each board.
- L × W × H
- Always in that order, measured internally
- 1–2 mm
- Clearance per side on folding cartons
- ± 1/16 in
- Folding carton dimensional tolerance
- Free
- White prototype before production
Method
How to Measure Correctly
Packaging dimensions are always written Length × Width × Height, measured on the inside of the box.
Starting points
Common Sizes by Product Type
Useful as a starting point — we still size the final dieline around your exact product.
| Product | Suggested internal size (in) | Box style | Notes |
|---|---|---|---|
| 30 ml serum bottle | 1.6 × 1.6 × 4.0 | Straight tuck end | Add a board insert to stop tipping |
| 50 ml cream jar | 2.4 × 2.4 × 2.6 | Reverse tuck end | Leave 1 mm clearance per side |
| Soap bar | 3.5 × 2.4 × 1.2 | Sleeve or window box | Uncoated kraft is most popular |
| Candle, 8 oz jar | 3.4 × 3.4 × 4.2 | Rigid two-piece | Die-cut insert recommended |
| Cupcake, 4-pack | 7.0 × 7.0 × 3.5 | Auto-lock with window | Include a cupcake insert tray |
| Folded t-shirt | 10.0 × 8.0 × 2.0 | Roll end tuck top | E-flute keeps dim-weight low |
| Supplement bottle, 60 ct | 2.5 × 2.5 × 4.8 | Straight tuck end | Add tamper-evident tuck |
| Subscription kit | 12.0 × 9.0 × 4.0 | Mailer box | Print the interior for unboxing |
Manufacturing
Board Thickness and Tolerances
Custom manufacturing carries accepted tolerances. Design fit with these in mind, especially on tight inserts.
| Board | Dimensional tolerance | Thickness | Best for |
|---|---|---|---|
| 12–18pt SBS | ± 1/16 in | 0.30–0.46 mm | Retail folding cartons |
| 20–24pt SBS / kraft | ± 1/16 in | 0.50–0.61 mm | Heavier cartons, larger panels |
| E-flute corrugated | ± 1/8 in | 1.5 mm | Slim mailers, sleeves |
| B-flute corrugated | ± 1/8 in | 3.0 mm | Standard shipping mailers |
| BC double-wall | ± 3/16 in | 6.0 mm | Heavy or fragile shippers |
| 2–3 mm rigid greyboard | ± 1/32 in | 2.0–3.0 mm | Luxury gift and magnetic boxes |
How we size your packaging
- 1
Measure the product
Measure the widest, deepest and tallest points of the product itself — not its label.
- 2
Add clearance
Add 1–2 mm per side for folding cartons, 3–5 mm where an insert or wrap is involved.
- 3
Choose the style
Pick the structure that fits the use case: tuck end for retail, roll end for shipping, rigid for gifting.
- 4
Prototype it
We produce a physical white sample so you can test fit and drop before committing to production.
Send Us Your Product Dimensions
We will return a free dieline, a 3D mockup and an itemized quote within 24 hours.