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Window Envelopes

Window Envelopes for Business Mailings

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 window envelopes come in a wide range of 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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Window Envelopes for Invoices, Statements, Checks, and Business Mail

Window envelopes help businesses send invoices, statements, checks, notices, and other recurring mailings without printing separate address labels. The recipient address shows through the envelope window, helping reduce mailing errors while giving outgoing mail a clean, professional appearance.

Advanced Filing Concepts offers single window envelopes, double window envelopes, security tinted envelopes, self-seal options, Digi-Clear® window envelopes, and bulk business envelope choices for offices, accounting departments, billing teams, schools, medical offices, nonprofits, and high-volume mailrooms.

Choosing the Right Window Envelope

Option Best For Notes
#10 Window Envelopes
4-1/8" x 9-1/2"		 Invoices, statements, checks, notices, and standard business mail The most common outgoing business envelope size
#9 Window Envelopes
3-7/8" x 8-7/8"		 Reply envelopes and return mailings Designed to fit inside a standard #10 envelope
Single Window Mailings where only the recipient address needs to show Simple, efficient, and widely used for invoices and statements
Double Window Mailings where both return and recipient addresses show through Helps avoid separate return address printing
Security Tint Checks, statements, invoices, tax forms, medical notices, and sensitive documents Interior tint helps reduce visibility of contents
Digi-Clear® Window Laser printing, digital printing, and heat-based workflows Designed to help resist window clouding caused by heat

Common Window Envelope Uses

  • Invoices, billing statements, and monthly account notices
  • Checks, remittance documents, and payment mailings
  • Medical, insurance, school, nonprofit, and office correspondence
  • Reply envelopes for donations, payments, forms, and return mail
  • High-volume mailroom, accounting, and administrative mailings

Single Window vs. Double Window Envelopes

Choose single window envelopes when your document already places the recipient address in the correct window position. Choose double window envelopes when your form, invoice, or statement also includes the return address in a second window position. Double window envelopes can help reduce extra printing steps and keep recurring mailings consistent.

For sensitive mail, security tinted window envelopes are usually the better choice. The inside tint helps protect private information while still allowing the address area to remain visible through the window.

Need custom printed window envelopes? Advanced Filing Concepts can help businesses order stock window envelopes with custom printing for invoices, statements, checks, branded mailings, and larger quantity B2B orders.

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