These 12 x 15 1/2 inch kraft gummed envelopes are built from 28 lb opaque paper stock, providing reliable tear resistance and preventing contents from being visible through the envelope wall. The flap carries a heavy gum coating that activates with moisture to form a firm, secure seal without additional tape or adhesive.

The open-end format suits documents, catalogs, reports, photographs, and other flat materials requiring a full 12" x 15 1/2" footprint. Shipping departments, print distributors, fulfillment centers, and office environments handling high-volume outbound mail or interoffice distribution rely on this size for oversized correspondence and marketing collateral that standard letter envelopes cannot accommodate.

Each case contains 250 envelopes and ships via parcel carrier. The 28 lb kraft construction balances weight economy with sufficient rigidity to protect contents through standard mail handling.