The 22 x 27 inch White Self-Seal Stayflats Plus® Mailer is a large-format rigid mailer built for flat, damage-free shipping without supplemental stiffeners. Lightweight chipboard construction maintains shape and rigidity throughout transit, and the white exterior accepts labels, direct printing, and branding applications where presentation matters alongside protection.

These mailers are well-suited for e-commerce fulfillment, galleries, print shops, architectural firms, and direct-to-consumer distributors shipping artwork, unframed prints, architectural drawings, presentation boards, and oversized flat documents. The format handles large media that standard padded envelopes cannot protect adequately.

The peel-and-seal closure bonds securely without moisture activation, supporting efficient packing line throughput. A pull-tab tear strip allows recipients to open the mailer cleanly without tools. Each case contains 50 mailers, and the parcel-friendly format supports both single-case and multi-case orders.