These 4" x 3" x 2" inch white corrugated mailers are built from ECT-32-B corrugated board and fold into a finished box without tape, glue, or staples. The one-piece self-locking structure creates double-wall panels along the front and sides, adding crush resistance without increasing box weight — a practical advantage for managing dimensional weight costs at volume.

The clean white exterior makes these mailers a natural fit for e-commerce fulfillment, retail subscription boxes, direct mail campaigns, and cosmetic or specialty goods shipping where presentation at the doorstep matters. The tool-free closure also speeds up pack station throughput by eliminating the taping step on every box.

Constructed from single-wall B-flute corrugated board, these mailers weigh approximately .078 lbs per mailer and are sold in bundles of 25.