Number 9 window envelopes are one of the most popular envelopes used in business. Use the above template and add you name and address for an envelopes that is completely customized if you choose to use these as a smaller business envelope. These are commonly referred to as a business reply or return envelope. The window in this #9 reply allows the address of the recipient to show through. A #9 envelope fits easily into a #10 envelope making it perfect for when you intend on someone sending something back to you.
Security Option: Are you mailing sensitive information? If so, you will want to consider adding the security tinted option to your #9 envelope order. Tinted or security tinted envelopes have printing on the inside of the envelope to help eliminate the ability of someone to see what you are sending without opening the mail piece.
