Our Crystal Clear Protective Closure Bags are designed to make it easy to insert and remove larger prints and photos. The location of the adhesive is on the body of the bag to ensure your product will not catch on any sticky glue. This B20PC bag measures 20 7/16" x 24 1/4" and fits 20" x 24" art, photography, double mats with backing, and single mats with foam board up to about 5/16 inch thick. The material is made from 1.6 mil BOPP plastic film, giving your product a presentation that is both vivid and professional. Your product can be seen without the need for removal, while it is well-protected from dust, fingerprints and handling. Archival safe.