500 No. 9 Self Seal Security Envelopes – Peel and Designed for Secure Mailing - Tinted with Printer Friendly Design Number Size 3 7/8 Inch X 8 Pack of

No. 9 Envelopes Self Seal with Fast Peel & Seal Closure – Offices and businesses preparing return mailers, invoices, and correspondence use these #9 self seal envelopes with an easy peel and stick flap that creates a secure closure quickly without moisture, improving efficiency in high-volume workflows.

• Privacy Security Tint – Businesses and organizations mailing checks, remittance slips, and client paperwork use these #9 security envelopes with a printed security tint that helps reduce read-through, protecting sensitive information during billing and tax-season mailings.
• Standard Commercial #9 Business Envelopes – Offices and nonprofits using return mail systems use these #9 3 7/8" x 8 7/8" envelopes, which fit regular letter size paper and fit neatly inside a #10 outer envelope for remittance returns, fundraising responses, and reply mail workflows.
• Windowless Self Sealing Envelopes for Clean Inserts – Businesses and organizations use these #9 envelopes (no window) maintain full control over addressing and contents, making them ideal for self-addressed return envelopes, payment returns, and client reply packets.