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DielineMaker
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PR box 300×300×100
Preview image

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.

DM-FRONT-LOCK-MAILER-01Mailer

PR box 300×300×100 dieline

Square influencer box with a sturdy front. A ready-sized preset of the front-lock mailer — change the length, width and height and every panel, tuck and glue flap is redrawn to match.

Inside300 × 300 × 100 mm
Outside316 × 308.8 × 103.2 mm
Flat blank720.8 × 933.6 mm
Download the dielinePro
Flat dieline preview

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-FRONT-LOCK-MAILER-01
Inside size
Length 300 · Width 300 · Height 100 mm
Size range
Length 80–600 · Width 50–450 · Height 25–250 mm
Manufacturing
314.4 × 307.2 × 101.6 mm score to score · inside vs outside sizes
Parts
One blank
Board area
0.495 m²
Default board
E-flute white / kraft · 1.6 mm caliper
Board options
E-flute WE-flute KF-fluteB-fluteSBS 350FBB 400Kraft 350Black 350SBS 18 pt
Good for
influencerprmailerroll enddouble frontfront lockcherry locklocking tabsretfpremium mailer

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
PR box 300×300×100 flat dieline with cut and crease lines

How the blank is sized

Score-to-score panel sizes of this DM-FRONT-LOCK-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 (1.6 mm for E-flute white / kraft). Change the size or board in the editor and every panel is recalculated.

PanelSize (mm)Formula
Base314.4 × 307.2–
Front314.4 × 100– × H
Front roll304.8 × 5.6–
Front (inside)304.8 × 100– × H
Back314.4 × 101.6– × H + T
Front ear ×2100 × 96.8H × H − 2T
Back ear ×2100 × 96.8H × H − 2T
Left end100 × 307.2H × –
Left end roll3.2 × 304–
Left end (inside)100 × 304H × –
Right end100 × 307.2H × –
Right end roll3.2 × 304–
Right end (inside)100 × 304H × –
Lid314.4 × 315.2–
Lid ear ×298.4 × 300.4H − T × –
Lock tab ×230 × 14–

Adjustable in the editor

Beyond the size and board, this structure exposes 8 options; the template and 3D preview follow each change.

  • Lock tabscount
  • Tab widthmm
  • Tab depthmm
  • Lid earson / off
  • Lid ear depthmm
  • Lock tonguescount
  • Pull tabon / off
  • Pull tab radiusmm

The front-lock mailer family

The same structure with sizes, boards and options set for a use.

All 20 front-lock mailer templates

Similar structures

Other structures built in a similar way, matched on code family, category, closures and proportions.

All mailer templates

Make this pr box 300×300×100 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.