#10 Window Envelope w/Peel & Seal & Security Tint

Professional #10 window envelopes built for clean, secure business mailing. Measures 4 1/8" x 9 1/2" and fits standard 8.5" x 11" letters folded into thirds, with a clear window to display the recipient address—no labels needed. Features a peel-and-seal self-adhesive strip for fast, mess-free sealing, plus security tint inside to help keep sensitive information more private. Perfect for invoices, statements, billing, payroll, and everyday office mail.