#10 Envelopes - Double Window - Flip & Seal - Security Tinted

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This #10 Double Window envelope is perfect for mailing invoices, statements, and standard business & legal documents.

The custom security tint protects your personal information as well as your customer’s. Privacy and confidentiality are critical for all business and legal transactions, so you need an envelope that meets your standards.

Perfect for business, these envelopes allow you to send out advertisements, invoices, special offers, and more, while maintaining an image of professionalism.

Your customers will be suspicious of unprofessional mail, but now, you can ensure that more letters will be opened, leading to more sales, opportunities, and relationships.

Stand out from the crowd!

In the modern world of business, too many people have forgotten the value of an old-fashioned letter.

Simply by reaching your customers through the mail, you are instantly placing yourself in their homes, providing a physical reminder of your products and services. A letter is much harder to ignore than an email.

Your competitors are probably relying on the internet to secure their business, but when you apply even a small effort toward marketing through the mail, you will stand out as a unique, more “real” business.

Stop licking your letters!

Out-dated envelopes that require moisture leave an unpleasant thickness, and can contaminate your materials. Your customers simply don’t want to be bothered with that type of envelope, and are less likely to want to open it.

The FLIP & SEAL allows you to quickly and securely seal your envelope, without having to add moisture. Your customers will appreciate the cleaner alternative, and it may lead to more business for you.

- The 1 X 3 1/2" Top Window is 1/2" from the left and 2-1/2" from the bottom of the envelope.


- The 1-1/8 X 4" Bottom Window is 1/2" from the left and 3/4" from the bottom of the envelope.



  • DOUBLE WINDOW SECURITY ENVELOPES; tired of cheap paper envelopes that can be easily seen through? Our Double Window Security Envelopes are ultra secure and perfect for mailing invoices, statements, standard business & legal documents, with secure flip and seal adhesive and tinted security wave patterns
  • TINTED SECURITY WAVE PATTERN; perfect for mailing invoices, statements, standard business & legal documents and sensitive correspondence, our #10 Envelopes are printed with a secure tinted wave pattern, easily obscuring numbers and data for premium, added security compared to other cheap envelopes
  • DUAL WINDOW DESIGN; easily read dual windows for everyday business mailings to easily display postal addresses. Each envelope contains two front windows, a 1" X 3-1/2" top window positioned 1/2" from the left and 2-1/2" from the bottom and the bottom 1-1/8 X 4" window is 1/2" from the left and 3/4" from the bottom
  • FLIP AND SEAL; forget cheap, weak, gummed envelope seals that easily tear, our Double Window Security Envelopes are designed with quick, ultra secure flip and seal adhesives, creating a secure seal that won’t accidentally open, perfect for time saving bulk mailings
  • LONG LASTING SUPPLY; perfect for everyday business use, our envelopes are provided as an ultra long lasting, 500 envelope supply measuring 4-1/8 x 9-1/2, ideal for mass mailing and all business needs! Click the Orange Button to order now


  • Model: 30110
  • UPC: 851685007095


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