

The real blank at this size, folded by the same engine as the studio. The artwork is a sample from a fictional brand — swap in your own in the editor.
Apparel mailer L 400×300×100 dieline
Knitwear, a jacket or a bundle order. A ready-sized preset of the mailer box — change the length, width and height and every panel, tuck and glue flap is redrawn to match.

Sign in to download. Dieline downloads are part of Pro: PDF, Illustrator, SVG and DXF, cut, crease and bleed on separate layers, without a watermark. See plans
- Reference
- DM-ROLL-END-MAILER-01
- Inside size
- Length 400 · Width 300 · Height 100 mm
- Size range
- Length 60–600 · Width 40–450 · Height 20–250 mm
- Manufacturing
- 428.8 × 303.2 × 103.2 mm score to score · inside vs outside sizes
- Parts
- One blank
- Board area
- 0.567 m²
- Default board
- B-flute shipping · 3.2 mm caliper
- Board options
- E-flute WE-flute KF-fluteB-fluteSBS 350FBB 400Kraft 350Black 350SBS 18 pt
- Good for
The flat dieline
Exactly what the downloads contain, drawn from the template at its default size, with a 3 mm bleed. How to read a dieline.
- Crease
- Cut
- Bleed 3 mm

How the blank is sized
Score-to-score panel sizes of this DM-ROLL-END-MAILER-01 blank at the default size, with the formula each one follows. L, W and H are the inside dimensions; T is the board caliper (3.2 mm for B-flute shipping). Change the size or board in the editor and every panel is recalculated.
| Panel | Size (mm) | Formula |
|---|---|---|
| Base | 428.8 × 303.2 | – × W + T |
| Front | 428.8 × 101.6 | – × H + T/2 |
| Back | 428.8 × 103.2 | – × H + T |
| Front ear ×2 | 100 × 93.6 | H × H − 2T |
| Back ear ×2 | 100 × 93.6 | H × H − 2T |
| Left end | 100 × 303.2 | H × W + T |
| Left end roll | 6.4 × 296.8 | – × W − T |
| Left end (inside) | 100 × 296.8 | H × W − T |
| Right end | 100 × 303.2 | H × W + T |
| Right end roll | 6.4 × 296.8 | – × W − T |
| Right end (inside) | 100 × 296.8 | H × W − T |
| Lid | 428.8 × 298.4 | – × W − T/2 |
| Lid ear ×2 | 96.8 × 288.8 | H − T × – |
| Front tuck | 403.2 × 50 | L + T × – |
Adjustable in the editor
Beyond the size and board, this structure exposes 8 options; the template and 3D preview follow each change.
- Front tuck depthmm
- Lid earson / off
- Lid ear depthmm
- Front tuck end earson / off
- Lock tonguescount
- Thumb notchon / off
- Notch radiusmm
- Tear strip opening2 options
The mailer box family
The same structure with sizes, boards and options set for a use.

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Similar structures
Other structures built in a similar way, matched on code family, category, closures and proportions.
Make this apparel mailer l 400×300×100 yours
Open it in the editor to set your size, drop artwork on each face, check bleed and safe areas, and export print-ready PDF with the dieline on its own layer — or stage it in a 3D scene for a mockup.





