Quality Park No. 10 Single Window Security Tint Treated Business Envelopes - Business - #10 - 4 1/8" Width x 9 1/2" Length - 24 lb - Flap - 500 / Box - White

Security business envelopes with a window are made with a material that inhibits the growth of mold and mildew to protect the product. Redi-Strip on the flap provides a clean, quick seal immediately upon contact. Simply peel off the adhesive strip and press to seal. The peel-off strip protects the adhesive from dust for a longer shelf life. No. 10 envelopes are tinted to protect the privacy of your contents.