Window Envelopes
Window envelopes make business mailing simpler and more efficient. Each envelope includes a clear, die-cut window that displays the recipient’s name and address directly from the document inside.
As a result, you can skip labels and double-addressing while keeping your mail clean and professional.
Because of this built-in efficiency, window envelopes have become the standard choice for invoices, statements, and business checks. They help reduce handling time, minimize errors, and keep outgoing mail consistent.
Window envelopes are available in industry-standard sizes such as #10, #9, and 6 ¾, making them compatible with most accounting and billing software.
You can also choose features like inside security tint for added privacy or self-seal flaps to speed up high-volume mailings.
Common Uses
- Invoices and billing statements
- Account notices and financial documents
- Business checks and remittance mail
- Customer communications and official notices
Key Benefits
- Faster processing: No labels or manual addressing needed.
- Improved accuracy: The address prints once and displays correctly through the window.
- Cleaner presentation: Mail looks organized and professional from the start.
- Efficient workflows: Ideal for automated and recurring business mailings.
Window Envelope Sizes
We offer the most common window envelope sizes used for business mailings. Each option works with standard accounting and payroll software, making it easy to choose the right size for your documents.
Explore Window Envelope Styles
Explore the most common window envelope styles used for business mail—
each designed to improve efficiency, accuracy, and presentation.
#10 Window Envelopes
The universal standard for business correspondence. Measuring 4 1/8" × 9 1/2", the #10 window envelope fits 8.5" × 11" documents folded in thirds. It’s the go-to choice for invoices, statements, and everyday business mail where the recipient’s address prints directly on the document.
These envelopes provide a professional presentation while saving time by eliminating the need to manually address each piece. Their consistent size and design ensure compatibility with most standard mailing systems and automated inserters.
Most Popular Window Envelopes
Laser Safe Digital Window Envelopes
Designed for laser and digital printers. Digital window envelopes use a heat-resistant film that won’t melt or wrinkle during printing, making them ideal for businesses that print addresses in-house.
They deliver precise, high-quality results even at fast print speeds, reducing errors and jams. These envelopes are especially useful for bulk mailing and secure correspondence, maintaining a clean, polished look for every document.
Window Envelope Features
Window envelopes are built with features that support accuracy, speed, and data protection. These specifications are industry standards for business mail, ensuring reliable processing and professional presentation.
Security Tint
Sealing Options
Material & Weight
Common Window Positions
Window placement affects how your address prints and aligns with your software.
Standard Left
Bottom-left placement. The most common option for business letters, invoices, and statements.
Double Window
Two windows—one for the recipient and one for the return address. Commonly used for QuickBooks® and accounting checks.
Right-Hand Window
Bottom-right placement. Designed for specialized forms, internal systems, or custom mailing layouts.
What are Custom Window Envelopes?
Custom window envelopes are the professional standard for transactional mail. Unlike generic stock envelopes, they are printed to your exact brand specifications. They combine the efficiency of a clear window—eliminating address labels—with branded design elements that help your mail stand out and get opened.
Anatomy of a Custom Window Envelope
Every detail matters. Here’s a clear breakdown of what you can customize on a window envelope—and why it matters for your business.
Upload your logo and make every mailing instantly recognizable. We print in crisp black or full color to keep your branding sharp and consistent.
Your return address is pre-printed in your chosen font, saving time and eliminating the need for labels—while keeping everything clean and professional.
The clear window displays the recipient’s address directly from the document inside. A durable poly film protects the opening while keeping the address easy to read.
Shown with a standard commercial flap. For faster processing, upgrade to Self-Seal (Peel & Stick) and speed through high-volume mailings.
An interior security tint blocks visibility of sensitive information, adding privacy to invoices, statements, and financial documents.
Our standard 24lb White Wove paper offers a bright, professional look with reliable performance in automated mailing equipment.
Upgrade Your Mail with Custom Window Envelopes.
Design window envelopes that align perfectly with your documents—featuring custom branding, secure window placement, and layouts that work seamlessly with your software.
Customize Your Window Envelopes →