Quality Park 9 x 12 Catalog Envelopes have a peel & seal closure that adheres without applying moisture. These welcome time savers for bulk mailings have a longer shelf-life than standard envelopes thanks to the peelable paper strip that protects the flap's adhesive from dust. Large REDI-STRIP envelopes are perfect for storing and mailing catalogs, 8 x 10 photos or full letter-sized documents without folds and creases. Heavy 28-lb white wove paper gives every correspondence a professional look and finish. 9 x 12 inch Catalog Envelopes. REDI-STRIP Envelope Closure. 28-lb White Wove. 100 Per Box. Mail Flat Without Folds: Don't settle for bulky, stuffed #10 envelopes or more expensive oversized flats; this 9 x 12 is the perfect compromise for cost-effective, professional-looking mailings with a little room to spare. Ideal for contracts, catalogs, registration packets, large photos and other correspondence. Get Mailings Gone, ASAP: REDI-STRIP envelopes save time and increase efficiency with a removable strip that eliminates the hassle of everyday mail duty and large bulk mailings. Simply peel and press. Eliminate the Yuck Factor: We promise you won't miss licking envelopes or those drippy moistener sponges in a cup! REDI-STRIP envelopes bring mailing into the modern era with a tidier, more hygienic alternative to standard envelopes. Plus, the peelable strip protects your adhesive from dust so envelopes last longer in storage. Classic White Wove Elegance: 28-lb White wove paper gives your large envelope mailings more polish than basic kraft. This heavy-weight stock is opaque to protect private contents. Use with address labels or laser print for a finished look at a fraction of the cost of custom printing. Think Ahead & Stock Up: REDI-STRIP envelopes are a popular office staple for your "never out" list. Stock up now for intra-office communications, bulk mail projects, sort & organize missions, or everyday needs for home & office.