The TerraBoard™ Expansion Mailer is a kraft board mailer built from 100% recycled content with 75% post-consumer fiber, offering documented sustainable sourcing for operations tracking environmental compliance. The expandable 4" depth allows a single mailer size to accommodate loads of varying thickness, reducing the need to stock multiple mailer sizes for different product depths.

This mailer suits e-commerce fulfillment centers, retail distribution hubs, and direct-to-consumer shipping operations where shipment thickness varies by order. The rigid kraft board construction resists bending and compression in transit without the added weight of corrugated, making it practical for lightweight goods, folded apparel, documents, and flexible packaged products.

Each mailer measures 10 1/2 x 19 x 4 inches interior and is sold in cases of 200. The parcel-friendly format supports routine replenishment cycles without requiring freight coordination, and case-quantity purchasing provides consistent per-unit cost control across shipping departments of any volume.