The ENV9 Number 9 Envelopes 24lb in the EV9 3.875 x 8.875 size are high-quality envelopes manufactured by the OPP brand. These envelopes are perfect for everyday use, mailing letters, invoices, statements, and more. Made from durable 24lb paper, they offer a professional look and feel. The white color provides a clean and crisp appearance, while the number 9 size fits standard business correspondence. These envelopes feature a gummed flap for secure sealing. Get your hands on these OPP ENV9 envelopes to streamline your mailing needs efficiently. Ideal for offices, homes, and personal correspondence.