Key features of window envelopes:
- Standard Sizes: Window envelopes are available in a variety of standard sizes to fit different types of letters and documents. The most common size among types of envelopes is #10, which measures 4 1/8 inches by 9 1/2 inches. 
- Customizable: Window envelopes can be customized with a company's logo, address, and other information, providing a professional look that reflects the sender's identity. 
- Secure: Window envelopes can be sealed with adhesive strips or moisture-activated glue to ensure that the contents remain secure during transit. Some window envelopes also include security tinting that prevents the contents from being seen from outside the envelope. 
- Durable: Window envelopes are typically made from high-quality paper or cardstock that is durable and resistant to damage during transit. 
- Time-saving: The use of window envelopes can save time and effort as the address is already visible, eliminating the need for a separate address label or envelope printing. 
- Versatile: Window envelopes can be used for a variety of purposes, including business and personal mail. 
- Cost-effective: These envelopes with windows are a cost-effective solution for businesses as they eliminate the need for a separate address label, reducing the cost of printing and mailing. 
- Professional: The use of window envelopes provides a professional look to business correspondence and billing statements. 
Overall, business envelopes with windows are a useful and versatile tool for businesses and individuals who need to send mail regularly. With their standard sizes, customizability, security features, durability, and cost-effectiveness, they provide a convenient and efficient solution for mailing letters and documents while maintaining a professional appearance.








