Box of 100 windowless 10 security envelopes with a Redi-Strip peel and seal closure

Security envelopes have a special security tint pattern that obscures what's inside; ideal when you're sending more sensitive material through the mail

Self seal envelopes are quick, easy and more clean and sanitary than gummed envelopes; with a Redi-Strip closure, just peel off the strip and press closed for a secure seal; no moisture needed

Each 10 envelope is 4-1/8 x 9-1/2 inches; designed to fit a letter size sheet (8-1/2 x 11 inches) folded into thirds

These white mailing envelopes are made from 24 lb paper; thick and durable enough for single and bulk mailings alike