These 4" x 4" x 2" white corrugated mailers are built from ECT-32-B corrugated board and fold into a finished, self-locking enclosure in seconds — no tape, glue, or staples required. The fold-over construction creates double-wall panels along the front and sides, adding crush resistance where transit pressure is greatest.

Their compact footprint and rigid structure make them a practical choice for e-commerce fulfillment, subscription box operations, retail distribution, and light manufacturing environments shipping small, delicate, or high-value items that need a protective enclosure without bulk.

Each mailer weighs approximately 0.0956 lbs, keeping dimensional weight impact minimal per shipment. Interior dimensions are 4" L x 4" W x 2" H. Bundles of 50 ship via parcel carrier.