Envelopes - Shop Window, Mailing & Security Envelopes for Office Use

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Envelopes

Envelopes for Mailing, Office Tasks & Professional Correspondence

At Advanced Filing Concepts, we offer a wide selection of envelopes for business, office, and personal use. Whether you need standard mailing envelopes for invoices, security envelopes for confidential documents, or laser-compatible window envelopes for professional correspondence, you’ll find the right fit here.

Popular envelope styles include: Business envelopes in standard #10, #9, and letter-size options. Window envelopes for quick address visibility. Security envelopes to protect sensitive contents. Large mailing envelopes for legal documents, catalogs, and bulk correspondence. Colored envelopes to help your mail stand out.

With multiple sizes, finishes, colors, and sealing styles available, Filing.com ensures you get the best envelopes for your application. Need help choosing? Contact us for expert recommendations.

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sku: W2604

#10 Window Envelopes (4 1/8 x 9 1/2) 24lb White, Side Seam, Digi-Clear Window B, Peel/Stick, 500/Box

#10 Window Envelopes are 4 1/8" x 9 1/2" and are made from 24lb. White Digi-C paper. They feature the Digi-Clear® Paper and Window Film. Digi-Clear paper is designed to reduce image distortion and hot toner better than other digital products. The...

MSRP:

Now: $71.99
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WSE
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sku: W3187

#10 Window Envelopes (4 1/8 x 9 1/2) 24lb White, Side Seam, Digi-Clear Window C, Peel/Stick, 500/Box

#10 Window Envelope – 4-1/8" x 9-1/2", White Digi-C, Digi-Clear® Window W3187 Digi-Clear® Envelopes are engineered for superior performance in laser printers and high-temperature environments. Constructed from 24lb white Digi-C paper,...

MSRP:

Now: $71.99
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sku: W2566

#10 Window Envelopes (4 1/8 x 9 1/2) 24lb White, Side Seam, Digi-Clear Window C, Self-Sealing, 500/Box

#10 Self-Seal Envelopes – Flip-Stik® Digi-Clear® Style C Window, 4-1/8" x 9-1/2" Choose W2566 Flip-Stik® Digi-Clear® Window Envelopes for crisp results and fast, no-moisture sealing. The Style C Digi-Clear® window film is...

MSRP:

Now: $71.95
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sku: W2603

#10 Window Envelopes (4 1/8 x 9 1/2) 24lb White, Side Seam, Digi-Clear Window H, Peel/Stick, 500/Box

#10 Window Envelopes are 4 1/8" x 9 1/2" and are made from 24lb. White Digi-C paper. They feature the Digi-Clear® Paper and Window Flim. Digi-Clear paper is designed to reduce image distortion and hot toner better than other digital products. The...

MSRP:

Now: $71.99
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Why Choose Our Envelopes?

At Advanced Filing Concepts, we specialize in professional-grade envelopes designed for reliability, compatibility, and presentation. Our laser-printer-friendly window envelopes, tamper-evident security styles, and colorful options help your documents arrive safely and make an impression.

Whether for business, personal, or specialty needs, we offer solutions for every mailing task. Explore our full collection and find high-quality options that support secure, efficient, and polished communication.

Our Envelope Selection

Window Envelopes: Laser-compatible options for invoices, statements, and correspondence.
Business Envelopes: Standard #10, #9, and letter-size styles for everyday office mailings.
Mailing Envelopes: Large formats, photo mailers, and durable mailing sleeves.
Custom Envelopes: Personalized with your brand, message, or specialty size requirements.
Specialty Envelopes: From interoffice envelopes to medical-grade and X-ray preservers.

Benefits & How to Choose

Laser printer–compatible for professional results.
High-quality papers and materials for durability and presentation.
Available in a wide range of sizes, colors, and sealing formats.
Security options like tamper-evident closures and protective linings.
Bulk-friendly pricing for high-volume orders.

Identify your use case—billing, correspondence, bulk, or specialty.
Select the size/orientation to match your documents and printer.
For sensitive materials, choose padded or security-enhanced envelopes.
Need branding? Explore custom printing and specialty sizes.

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Price

Price

WSE

sku: W2604

#10 Window Envelopes (4 1/8 x 9 1/2) 24lb White, Side Seam, Digi-Clear Window B, Peel/Stick, 500/Box

WSE

sku: W3187

#10 Window Envelopes (4 1/8 x 9 1/2) 24lb White, Side Seam, Digi-Clear Window C, Peel/Stick, 500/Box

WSE

sku: W2566

#10 Window Envelopes (4 1/8 x 9 1/2) 24lb White, Side Seam, Digi-Clear Window C, Self-Sealing, 500/Box

WSE

sku: W2603

#10 Window Envelopes (4 1/8 x 9 1/2) 24lb White, Side Seam, Digi-Clear Window H, Peel/Stick, 500/Box

WSE

sku: W2604

#10 Window Envelopes (4 1/8 x 9 1/2) 24lb White, Side Seam, Digi-Clear Window B, Peel/Stick, 500/Box

WSE

sku: W3187

#10 Window Envelopes (4 1/8 x 9 1/2) 24lb White, Side Seam, Digi-Clear Window C, Peel/Stick, 500/Box

WSE

sku: W2566

#10 Window Envelopes (4 1/8 x 9 1/2) 24lb White, Side Seam, Digi-Clear Window C, Self-Sealing, 500/Box

WSE

sku: W2603

#10 Window Envelopes (4 1/8 x 9 1/2) 24lb White, Side Seam, Digi-Clear Window H, Peel/Stick, 500/Box

Why Choose Our Envelopes?

Our Envelope Selection

Benefits & How to Choose

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