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Shipping & Mailer Templates

Self-Locking Mailer Box Dieline (No Tape)

Single-piece corrugated shipping box: the two long walls extend into a pair of chamfered lid flaps that meet at the centre and lock with a friction tab, so it closes shut without tape or glue.

Live dieline preview

CutFoldPerf / valveBleedSafe artworkGlue / seal
Self-Locking Mailer Box Dieline (No Tape) 250 x 180 x 80 mm board 3 mm / allowance 3.45 mm / self-locking, no tape LOCK TAB - tuck into slot LOCK SLOT

Recommended materials

  • E-flute 1.5 mm — light parcels, best print surface
  • B-flute 3 mm — the standard e-commerce compromise
  • BE double wall 4.5 mm — heavy or fragile shipments

Production-preflight notes

  • Fold both end walls first, then the long walls, so the locking ears seat behind them.
  • Fold the two lid flaps down last and push the tab through the slot to lock — no tape needed.
  • Board allowance is applied automatically from the thickness you enter; re-check tab/slot clearance after changing thickness.

Common sizes for this format

From dieline to a supplier-ready RFQ

Free artwork check before you print

Send us your design on this dieline and our prepress team checks bleed, fold clearance, CMYK conversion, minimum font size and barcode placement — free, whether or not you order from us. It is the same check every production job goes through.

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