Envelopes - Business, Remittance, Catalog & Specialty

Envelopes for Business, Office & Everyday Mailing

Advanced Filing Concepts offers a complete 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 reliable, high-quality options right here.

Popular envelope styles include #10 and #9 business envelopes, window envelopes for quick address visibility, security envelopes to protect sensitive contents, large mailing envelopes for catalogs or legal documents and colored envelopes that make your mail stand out. With multiple sizes, finishes, colors and sealing styles available, Filing.com makes it easy to choose the best envelopes for your specific application.

Best Sellers & Use Cases

• #10 Business (4-1/8" × 9-1/2"): Invoices, statements, general mail.
• #9 Reply (3-7/8" × 8-7/8"): Remittance/return inside #10 mailings.
• Catalog (Open End): Top-opening for thicker stacks, manuals, kits.
• Booklet (Open Side): Side-opening for brochures that shouldn’t be folded.
• Colored: Promotions, kits and branded mail that needs attention.

Window Options (Incl. Laser-Compatible)

Pick single or double windows for addressing and remit slips. Our laser-compatible window options resist heat curling and clouding—ideal for high-speed laser printers and inserters.

Tip: Align your document’s address block to the window size to prevent show-through issues.

Security, Privacy & Compliance

• Security tints: Printed interiors help block reading contents through the paper.
• Heavier stocks: Improve opacity to protect sensitive mail.
• Remittance styles: For payments and donations—with inside printing options.

From confidential billing to legal notices, choosing the right security and opacity helps protect sensitive information and support your compliance requirements.

Sizes, Flaps & Sealing Styles

• Commercial: #6-3/4, #9, #10 for daily business correspondence.
• Catalog (Open End): Center seam with policy/straight or wallet flaps.
• Booklet (Open Side): Side seam with square or wallet flaps.
• Gummed: Moisten to seal—economical for bulk runs.
• Peel & Seal: Fast, clean, secure—no moisture needed.
• Self-Seal: Two latex strips bond under pressure.

Advanced & Specialty Envelope Workflows

Beyond traditional mailing, we also offer specialty products for more advanced office workflows. Shop integrated form-label sheets for billing and shipping, ColorBar refill packs for Smead-compatible label printers and other solutions designed for enterprise systems, mailers and multi-department environments.

These products are essential for teams that need clarity, speed and consistency in complex document systems—especially when envelopes are tied into practice management, ERP or CRM software.

Helpful Tips

• Match contents: Pick size/orientation (open end/side) to minimize folds.
• Printer use: For window envelopes, choose laser-compatible windows to avoid warping.
• Branding: Colored or custom-printed envelopes help reinforce your brand and increase open rates.

Popular Envelope Categories

Business Envelopes · Window Envelopes · Security Envelopes · Catalog · Booklet · Colored

Many items are Made in the USA and selected specifically for compatibility with modern printers and mailing equipment.

Need guidance? Contact us for personalized recommendations from envelope and filing specialists who have been supporting offices, clinics and legal practices for over 40 years.