Folders, Labels & Cabinets
Medical, Legal, Office Use
America’s Filing Supply
Folders, Labels & Cabinets
Medical, Legal, Office Use
America’s Filing Supply
Window envelopes streamline business mailings by eliminating the need for handwritten or printed labels. Designed for invoices, checks, and other important documents, these envelopes offer a polished and professional look while ensuring accuracy in delivery. At Advanced Filing Concepts, we offer a full selection of single window envelopes and double window envelopes in bulk boxes of 500—perfect for high-volume business use. Our envelopes come in standard #9 and #10 sizes, as well as many other sizes, designed to fit most standard business documents. Choose from self-seal, security-tinted, and custom-printed options to match your needs.
Option | Best For | Notes |
---|---|---|
#10 (4-1/8" × 9-1/2") | Outgoing invoices & statements | Standard business size |
#9 (3-7/8" × 8-7/8") | Reply/return envelopes | Fits inside #10 |
Single Window | Recipient address only | Simplest, most common |
Double Window | Recipient + return address | No manual return printing |
Security Tint | Privacy for sensitive data | Great for statements |
Digi-Clear® Window | Laser printer workflows | Resists heat/clouding |