#10 Gummed White Laser Printable Business Envelopes with Left Window – 4 1⁄8 x 9 1⁄2″

Windows designed to withstand heat and laser printers.
#10 envelope is the most popular size for letters and invoices.
Security tint for privacy and confidentiality.
Gummed flap.
Moisten flap for a permanent seal.