Quality Park No. 10 Security Tinted Business Envelopes with Reveal-N-Seal® Self-Seal Closure

Security - #10 - 4 1/8" Width x 9 1/2" Length - 24 lb - White - 500 / Box. Blue, security-tinted pattern to make it impossible to see the details of the contents even when held up to light. Contemporary side seams for a modern, professional look; fully gummed flap for a secure seal.