Quality Park No. 10 Window Security, Treated Envelopes with Redi-Strip® Closure - Business - #10 - 4 1/8 Width x 9 1/2 Length - 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.

• Material that inhibits the growth of mold and mildew to protect contents
• Security-tinted with blue pattern to make it impossible to see the details of the contents even when held up to light
• Made from premium, 24 lb. white wove stock to add a professional touch to your personal and business mailing
• Redi-Strip closure for a secure seal that keeps contents contained - simply peel off strip and press