Keep your sensitive information safe with the Quality Park Security Tinted #10 Window Envelope. Measuring 4 1/8" x 9 1/2", these envelopes are perfect for mailing important documents while ensuring privacy. The security tint prevents prying eyes from reading the contents, making them ideal for financial statements, invoices, and personal correspondence. Each box contains 500 envelopes, providing you with ample supply for all your mailing needs. Made from high-quality white paper, these envelopes are not only functional but also professional in appearance. Secure your communications with Quality Park!