Quality Park #10 Gummed White Double Window Security Envelopes - 4-1/8" x 9-1/2" - 500 Pack

Securely seal and send important mail with Quality Park #10 Double Window Security Envelopes. #10 is a commonly used envelope size for mailing letters, cheques, billing statements, invoices and more. Ideal for business use, the security tinted envelopes are made from premium 24 lb. white wove stock for a professional appearance. They have a reflex blue tint pattern that prevent others from reading sensitive contents. To seal them, simply moisten the gummed flap closure for a permanent seal. Enve