These 9 1/2 x 12 1/2 inch kraft gummed envelopes are built from 28 lb opaque paper stock with a heavily gummed flap that forms a secure, tamper-evident closure when moistened — no self-seal strip or additional adhesive required.

The opaque kraft construction keeps contents confidential in transit, making these envelopes well suited for contracts, legal documents, catalogs, flat promotional materials, and business correspondence in office mailing rooms, e-commerce fulfillment centers, and retail distribution operations.

Each case contains 500 envelopes and weighs approximately 23.6 lbs, supporting efficient bulk storage and high-volume throughput without frequent reordering. The 28 lb paper weight provides dependable tear resistance for standard outbound mailing workflows.