Effortless Mailing Made Simple

Streamline your mailing process with the #9 (3-7/8″ x 8-7/8″) Double Window Envelope – Self Seal. This thoughtfully designed envelope features two conveniently positioned windows, allowing sender and recipient addresses to show clearly without the need for manual labeling. Save time and reduce hassle every step of the way.

Secure Self-Sealing Design

Enjoy the efficiency and security of our self-seal technology. No water or glue is required—just press to close, ensuring strong adhesion and protection of sensitive contents. The envelope is perfect for checks, invoices, statements, and essential correspondence where professionalism and security are paramount.

The Perfect Fit for Business Communication

Designed to meet the demands of modern businesses, the #9 Double Window Envelope fits various document sizes perfectly, ensuring a polished and functional presentation. Its durable construction resists wear and tear during transit, giving you peace of mind that your documents arrive intact every time.

Streamlined Mailing For Your Everyday Needs

The #9 (3-7/8″ x 8-7/8″) Double Window Envelope is the ideal solution for hassle-free mailing. Designed for efficiency, it features two transparent windows to neatly display return and recipient addresses without the need for manual labeling. Perfect for invoices, checks, and other correspondence where professionalism matters.

Reliable Self-Sealing Closure

Simplify your mailing process with our self-seal technology. No licking, no messy adhesives—just peel and press for a secure and tamper-evident closure. Whether you’re sending a handful of letters or a bulk batch, this envelope ensures consistency and ease of use every time.

Durable Design Meets Professional Appeal

Crafted from premium paper stock, the #9 Double Window Envelope offers durability while maintaining a clean and polished appearance. The double windows are perfectly positioned for standard document formatting, making it universally compatible with popular accounting software and mail merge templates.

#9 (3-7/8″ x 8-7/8″) Double Window Envelope – Self Seal

SKU: 70031s

Streamline your payment processing with our double window check mailing envelopes. Designed with security in mind, these envelopes feature a security tint on the inside to prevent confidential information from showing through. To ensure compatibility with your check or software, contact our Sales Department for a sample.

Specifications:
Size: #9
Top Window Size: 1″ x 3 1/2″
Top Window From Left Side: 1/2″
Top Window From Bottom: 2 1/4″
Bottom Window Size: 1″ x 3 1/2″
Bottom Window From Left Side: 1 3/8″
Bottom Window From Bottom: 5/8″
Weight: 24#
Material: White Wove
Flap Opening: Long
Seal: Self Seal (Shipped Open)

Compatible Software:
Client Accounting Suite
Master Tax
Software Business Systems