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12 1/2 x 9 1/2" Stayflats® Express Mailers

Our version of the courier industry standard overnight letter.
  • Manufactured from white chipboard.
  • Lightweight to save on postage.
  • No additional stiffeners needed.
  • Side loading style makes inserting and retrieving documents easier.
  • Peel-and-seal closure.
  • Pull tab tear strip for easy opening.
Stock Number
Pricing
Stock NumberRM1EPPricing
12 1/2 x 9 1/2" Stayflats® Express Mailers
Specifications

Outside Dimensions W x L: 12 1/2 x 9 1/2"

Thickness: .012

Quantity Per Case: 250

Order in Multiples of: 1

Freight Class: 60

Weight: 25 EA

NMFC Code: 20475-11

Ships Parcel: Yes

Description

The Stayflats® Express Mailer is a rigid flat mailer manufactured from white chipboard, providing firm protection for flat contents without requiring separate stiffeners. The side-loading design allows easy insertion and retrieval while keeping contents flat throughout transit.

These mailers suit e-commerce fulfillment, print shops, legal and financial offices, photo labs, and professional correspondence operations that ship documents, certificates, photos, and flat media on a regular basis. The lightweight chipboard construction helps manage postage and carrier costs.

The peel-and-seal adhesive strip delivers a secure, tamper-evident closure, and the pull-tab tear strip lets recipients open the mailer cleanly without tools. Each case contains 250 mailers, supporting consistent flat-mail volume for operations that reorder in bulk.

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