quality park #10 self-seal security envelopes, security tint and pattern, redi-strip closure, 24-lb white wove, 4-1/8" x 9-1/2", 100/box (qua69117), 1 pack quality park quality park #10 security envelopes have a strong peel & stick closure that seals fast without applying moisture. our heavy opaque envelope stock is printed with a security tint that makes envelopes difficult to see through. a complex security pattern scrambles the appearance of numbers and text. plus, reid-strip envelopes have a long shelf-life thanks to the paper strip that protects your adhesive from dust. bright 24-lb. white wove paper is perfect for use at home or at work.brabra4-1/8 x 9-1/2 inches. reid-strip envelope closure. 24-lb white wove. 100 per box.brabrastrong, fast and efficient: reid-strip envelopes save time and increase efficiency with a removable strip and strong adhesive seal that ends the hassle of everyday mail duty. to close them, simply peel and press.brabraprotected & secure: guard sensitive data with a security tint makes envelopes difficult to see through. a complex security pattern scrambles the appearance of numbers and text. these extra security features are essential for sending checks or personally identifiable information (pii) through the mail.brabraeliminate the yuck factor: we promise you won't miss licking envelopes or those drippy moistener sponges in a cup! reid-strip envelopes bring mailing into the modern era with a tidier, more hygienic and still very affordable alternative to standard envelopes. barreling lasting in storage: the peel able paper strip is not only convenient, it protects your adhesive from dust so envelopes last longer.brabrabright white elegance: 24-lb. white wove paper gives your everyday mailings a professional finish. ideal for business or personal correspondence.brabrastock up for busy season: keep several boxes of this necessity on hand.