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Guide dieline

E-Commerce & Shipping

Ear-Lock Mailer

Also known as Side Wings

A mailer whose side wings lock into the lid, so it closes without tape.

Good for

  • D2C Brands
  • Monthly Box Kits
  • Tech
  • Apparel Packs

Structure

  • Inner Lock Ears
  • No Tape Needed
  • Secure Corners

Material guidance

Corrugated board is the usual choice: E-flute for mailers, B-flute or double wall for heavier shippers.

Current size: 280 × 200 × 90 mm. Guide dieline drawn to this size; request the production file before cutting.

Request production dielineAll box styles

The structure, unfolded.

Change the size and the dieline redraws.

Ear-Lock Mailer dieline at 280 × 200 × 90 mmBaseLid
  • Cut lines
  • Fold / crease
  • Perforation
  • Bleed guide

How a ear-lock mailer is built

A roll-end mailer whose lid dust flaps have ears that lock into slots in the side walls, holding the lid firmly without tape.

Putting it together

  1. 1Fold up and roll the walls.
  2. 2Load the product.
  3. 3Close the lid and push each ear into its slot.

Measuring for this style

Length (L)
The inside length of the base, side to side.
Width (W)
The inside depth of the base, front to back.
Height (H)
The inside height of the walls once the lid is closed.

All sizes are inside dimensions. Add 1 to 2 mm of clearance around the product. How to measure

When to choose it

For subscription boxes and retail-ready mailers that are opened and closed more than once.

Before you print

  • Ear slots must line up with the rolled wall; small size changes move both.
  • Corrugated adds thickness: the outside is about two board thicknesses larger than the inside on every axis.

Questions

Ear-Lock Mailer FAQs

Short answers about sizing, board and files for this style.

What size should I enter for a Ear-Lock Mailer?

Enter inside dimensions in millimetres, centimetres or inches. Length: the inside length of the base, side to side. Width: the inside depth of the base, front to back. Height: the inside height of the walls once the lid is closed. Measure the product at its widest points and add 1 to 2 mm of clearance (3 to 5 mm for rigid boxes).

Which material is best for a Ear-Lock Mailer?

Corrugated board is the usual choice: E-flute for mailers, B-flute or double wall for heavier shippers.

How is a Ear-Lock Mailer put together?

Fold up and roll the walls. Load the product. Close the lid and push each ear into its slot.

Can I download a Ear-Lock Mailer dieline?

You can open the Ear-Lock Mailer in PW Studio at your exact size and save a preview of the guide dieline for planning. For a production cutting file, request the dieline and we prepare it for your board.

What else is a Ear-Lock Mailer called?

It is also known as Side Wings. For subscription boxes and retail-ready mailers that are opened and closed more than once.

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