THIS IS FORA PACK OF 10 MATS WITH Acid Free Backing Boards and Self-Seal Crystal Clear Bags , Featuring a picture opening for a 8.5x11 inch photo, to fit in a 12x16 inch picture frame. Photo openings are beveled cut 0.5" smaller than the art size advertised to overlap the photo and help keep it securely in the frame. MADE TO DISPLAY a 8.5x11 Photo and fit in a standard 12 x 16 Picture Frame. Vibrant Purple Crocus Suede color Acid Free Picture Matting. Great replacement for damaged, dirty, or faded matting in your old frames. PREMIUM QUALITY: Our precut photo matboards are acid free & precision cut with a 45 degree bevel by machine for perfect corners and NO over-cuts every single time! PRECUT ACID-FREE, PROFESSIONALLY BEVEL CUT Matte Board. Custom Frame Shop and Archival Quality. All of our Precut Matboards are proudly MANUFACTURED IN THE USA.