- US, United States
- May 24th
#9 FLIP & SEAL Double Window Security Business Mailing Envelopes for Invoices, Statements & Legal Documents, Self-Sealing Adhesive Seal, Security Tinted, Size 3-7/8 x 8-7/8 - 24 LB 500 Count (30109) This 9 Double Window envelope is perfect for mailing invoices, statements, and standard business & legal documents. The custom security tint protects your personal information as well as your customer's.