12 3/4 x 15" White (25 Pack) Self-Seal Stayflats Plus® Mailers

The Stayflats Plus® Self-Seal Mailer measures 12-3/4 x 15 inches and features rigid chipboard panels that resist bending and flexing throughout transit, eliminating the need for supplemental stiffeners or backing boards. The white exterior accepts labels, stamps, and branding directly, and the peel-and-seal adhesive strip creates a secure closure without tape or additional sealing equipment.

These mailers are well-suited for e-commerce sellers, print shops, photographers, and B2B distributors shipping large-format photos, certificates, art prints, catalog sheets, architectural drawings, and bound documents. Any application where contents must arrive flat and undamaged benefits from the rigid panel construction.

Recipients open the mailer cleanly using the built-in pull-tab tear strip, requiring no tools. Chipboard construction keeps per-unit weight low, which helps manage parcel shipping costs at volume. Each pack contains 25 mailers, making this quantity practical for moderate-volume operations or initial SKU evaluation before scaling to larger pack sizes.