30 Sheets 10″ X 12.5″ White Chipboard with Grey Core, 80 PT (2Mm) Thick Board for Covers, Scrapbooking, Photo Backing and Craft Projects. We are committed to resolving all inquiries promptly and professionally.

12×12 for 8×8 White Mats. The backing is white on both side. Photo Mat Opening Size: 7.5″ x 7.5″ with 45° white core bevel cut. The re-sealable adhesive strip of the clear bag is below the opening of the bag instead of on the flap.