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Window Envelopes
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.
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| 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 |