Booklet – #10 1/2 – 6″ Width x 9 1/2″ Length – 28 lb – Adhesive – White – Paper – 500 / Box

Security envelopes feature a reflex blue pattern that protects sensitive client information by obscuring the details of the contents even when held up to light. Single-window envelopes display your recipient’s address for simple bulk mailings. Postage Saver Flat Mailers are made from more durable, 28 lb. paper compared to standard business envelopes. 6″ x 9-1/2″ are perfect for larger enclosures. Moisture-seal commercial flap and side seams provide a clean, professional look. Single window measures 1-3/8″ x 4-1/2″ and is positioned 7/8″ from the left edge and 2-3/8″ from the bottom.