The TerraBoard™ Expansion Mailer is a rigid kraft mailer built from 100% recycled board with 75% post-consumer fiber content, offering a verifiable sustainability credential for operations tracking environmental procurement metrics. The expansion gusset opens to a full 3" depth, accommodating variable-thickness items without requiring void fill or oversized corrugated alternatives.

This mailer suits e-commerce fulfillment, retail distribution, subscription box programs, and direct-to-consumer apparel and accessories shipments where a firm-walled, right-sized mailer reduces dimensional weight compared to standard corrugated boxes. The rigid side walls provide consistent protection for folded soft goods, bound materials, flat-pack accessories, and other items that benefit from crush resistance without added bulk.

Constructed from recycled kraft board, each mailer maintains structural integrity across the full 3" expansion range. Cases contain 200 mailers and ship via parcel carrier, supporting consistent high-volume stocking without requiring freight coordination.