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SAVE TIME WITH SELF-STICK: Quality Park #6 3/4 Security Envelopes have a strong peel & stick closure that helps you fly through mailings in record time ENHANCED SECURITY: Offer the protection clients deserve & protect yourself from liability; a security tint makes envelopes hard to see through; a security pattern scrambles the appearance of text LESS YUCK: We promise you won't miss licking envelopes or crumbly, drippy sponges; complete your mailings, no accessories required