These 18 x 23 inch kraft jumbo envelopes are built from 28 lb kraft paper with an ungummed flap, giving handlers the flexibility to seal with tape, string, or a preferred closure method rather than a fixed adhesive. The open-end format and generous flat dimensions make them well-suited for oversized contents that standard envelopes cannot accommodate.

Corporate mail rooms, print shops, fulfillment centers, and legal offices rely on this size for shipping catalogs, blueprints, posters, presentation materials, artwork, and multi-page flat documents. The flat profile also supports interoffice routing workflows where envelopes are reused across departments.

Each envelope is constructed from 28 lb kraft paper. Cases contain 100 envelopes and ship via parcel carrier, making replenishment practical for operations that process large-format correspondence on a recurring basis.