Protective closure bags are designed to prevent the adhesive from coming into contact with your product. This is especially helpful when working with larger art and photography prints. RPA24X30 is our retail pack of 25 protective closure bags that include our B2430PC bags. These bags measure 24 7/16"" x 30 1/4"" and are ideal for 24"" x 30"" art, photography and products with backing and mats up to 3/8 inch thick. The static-free adhesive is located on the bag, not the flap, so it doesn't get caught when sliding your work in and out. The 1.6 mil Bopp material provides exceptional clarity and durability. The pack is packaged in a hanging outer sleeve and is ready for the retail environment. Acid-free..