13 x 16 x 4" Expansion Poly Mailers
- Features a gusseted bottom to allow for thicker items such as binders, books and catalogs.
- Puncture, moisture, tamper and tear-resistant.
- High strength seams will keep contents intact even if over packed.
- The outer surface of the mailer is white and the inner lining is silver.
- Labels, ink and stamps adhere well.
- Self-seal closure with a double perforation tear strip for easy opening.
Stock Number | Pricing |
|---|---|
| Stock NumberEPM13164 | Pricing |
Outside W x L x D: 13 x 16 x 4"
Quantity Per Case: 100
Order in Multiples of: 1
Freight Class: 60
Weight: 4.66 EA
NMFC Code: 20475-11
Ships Parcel: Yes
These 13 x 16 x 4 inch expansion poly mailers are built from 2.5 mil polyethylene with a gusseted bottom that expands up to 4 inches, giving the envelope enough depth to accommodate thicker or irregularly shaped items without straining the seal. The white exterior and silver interior lining deliver a clean, professional presentation while blocking moisture from reaching contents in transit.
These mailers are a practical choice for e-commerce fulfillment centers, subscription box operations, retail distribution, and direct-to-consumer apparel or soft goods shipping — anywhere orders vary in thickness and a standard flat mailer won't reliably close. Labels, ink, and postage stamps adhere directly to the outer surface without primers or additional treatment.
Construction includes high-strength seams rated to hold under overpacked conditions, puncture and tear resistant walls, and tamper-evident properties for added security. The self-seal closure incorporates a double-perforation tear strip so recipients can open cleanly without scissors. Each case contains 100 mailers and ships via parcel carrier.
Copyright © 2026 American Paper & Packaging. All rights reserved.
We use cookies to provide essential site functionality for the shopping cart, login, and security. We also use third-party cookies for analytics and advertising, which require your consent. You can accept all cookies, customize your preferences, or reject non-essential cookies. See our privacy policy for more details.