Number 10 Double Window Security Envelopes, 500 Pack

These number 10 size double window security envelopes measure 4 1/8 inches by 9 1/2 inches and are made from 24-pound paper. They feature a self-sealing flap for easy closure and are designed to securely hold invoices, business statements, and documents. The envelopes have two windows to display recipient information clearly. Ideal for professional correspondence, they provide a secure and efficient way to send important documents.