12 3/4 x 15" White Stayflats® Mailers
- Manufactured from white chipboard.
- Lightweight to save on postage.
- No additional stiffeners needed.
- Tab lock closure.
Stock Number | Pricing |
|---|---|
| Stock NumberRM4W | Pricing |

Outside Dimensions W x L: 12 3/4 x 15"
Thickness: .028
Quantity Per Case: 100
Order in Multiples of: 1
Freight Class: 60
Weight: 35.48 EA
NMFC Code: 20475-11
Ships Parcel: Yes
White Stayflats® Mailers at 12-3/4 x 15" deliver rigid, lightweight protection for flat materials in transit. Built from white chipboard, the mailer body itself provides the stiffening — no separate inserts are needed to keep contents flat through postal or courier handling.
The tab-lock closure seals the flap without tape or additional materials, making these mailers well suited for high-volume pack-out in fulfillment centers, print shops, photography studios, and professional offices sending large-format documents, prints, or artwork.
The white chipboard exterior presents a clean, professional face for outbound shipments and retail correspondence. Each case contains 100 mailers, and the lightweight construction helps control per-piece postage costs at volume.
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.

























