Quality Park No. 10 Security Envelopes with Window - Business - #10 - 4 1/8" Width x 9 1/2" Length - Flap - 1 / Box - White | Bundle of 5 Boxes

Unique material inhibits growth of mold and mildew for added protection Security tint keeps your contents completely private Window conveniently displays printed address to eliminate hand addressing Secure Redi-Strip flap for easy closure Perfect for everyday business use