These 20 x 16 x 1 inch jumbo fold-over mailers are constructed from ECT-32-B single wall white corrugated board, delivering a rigid, crush-resistant enclosure that keeps flat contents protected without the bulk of a standard shipping box. The fold-over flap design closes quickly — place contents inside, fold, and secure with tape — making these practical for high-volume packing lines where speed and consistency matter.

The base footprint and 1" depth make these mailers well-suited for apparel, framed prints, calendars, documents, sample kits, and thin retail goods. Direct-to-consumer e-commerce operations, B2B distributors, and print fulfillment centers all benefit from the clean white exterior, which presents professionally without additional packaging.

Each mailer weighs approximately 0.595 lbs, keeping outbound shipment weights low. The ECT-32-B corrugated construction meets standard parcel transit requirements. Sold in bundles of 20.