The #8 Double Window Self Seal Security Envelopes are made in China and feature tint protection for added privacy. These envelopes are designed for business and industrial use in material handling, packing, and shipping. The double window design allows for the recipient’s and sender’s addresses to show through the envelope, while the self-seal closure ensures secure sealing without the need for moisture or adhesive. Ideal for mailing important documents or sensitive information, these envelopes provide a convenient and secure solution for various mailing needs.