Survivor‚® 9 x 12 DuPont Tamper Indicating Panel Catalog Mailers - 100 / BX - Security - 9 Width x 12 Length - 14 lb - Peel & Seal - 100 / Box - White

These Tamper Evident Envelopes feature flaps with patented tamper indicating panels. Once flaps are raised, the words "OPENED" appear in red and cannot be repaired to hide evidence of tampering. Water-resistant and moisture-resistant envelopes are made of DuPont Tyvek so they won't rip, tear or puncture. Design is much stronger and more secure than traditional paper envelopes. These envelopes are lightweight to save on postage costs and easy to use. Simply peel and seal.

• Made with durable yet lightweight, 14 lb. DuPont Tyvek that's tough enough to resist punctures, tears and moisture during shipping
• Unique, tamper-indicating panel on flap displays "opened" in red if the seal is broken
• Peel-and-seal, Flap-Stik closure for a clean, sanitary seal without moisture; release strip for quick opening