Quality Park, Kraft Catalog Envelopes, Redi-Seal, Brown Kraft, 6x9, 100 per box (43167) DURABLE: Heavyweight 28-lb. paper stock ensures no rips or tears REDUCE WASTE: Not only will the Redi-Strip save your time, it will save your money! These envelopes have a longer shelf life thanks to the peelable strip that protects your adhesive from dust! Features: 100, 6x9 Catalog Envelopes MULTI-PURPOSE: These 6x9 envelopes can easily fit folded letters, documents, CDs, etc. These white envelopes can be used for virtually anything you need them for! SECURE: Redi-Strip self-adhesive closure will ensure your contents stay safe with the licking factor out of mind