18 x 12 x 4" Kraft Deluxe Literature Mailer

The 18 x 12 x 4 inch Kraft Deluxe Literature Mailer is a self-locking corrugated mailer built from ECT-32-B kraft corrugated board. Its front outside tuck closure and protective side flaps lock contents securely in place without tape, glue, or staples — keeping assembly fast and pack stations free of consumables.

This mailer suits e-commerce fulfillment, retail distribution, print shops, and B2B shippers sending documents, catalogs, flat-packed apparel, or boxed goods that fit a shallow corrugated footprint. The interior accommodates standard letter and tabloid-format materials, and the 4" depth handles lightly padded or multi-piece shipments that exceed envelope capacity.

Constructed from single wall B-flute corrugated board, the mailer weighs approximately 0.79 lbs, adding minimal dimensional weight while maintaining structural integrity through carrier handling. Sold in bundles of 25, parcel-friendly.