Quality Park 9 x 12 Catalog Mailing Envelopes with Redi-Strip® Self-Seal Closure
 
First-class catalog envelopes feature postal-approved, green diamond border and a convenient Redi-Strip closure. Removable strip provides a clean, quick seal immediately upon contact. Simply peel off strip that protects the adhesive from dust for a longer shelf life. Sturdy, 28 lb., open-end style envelopes offer a first-class border.