Pack of 10 16x20 Black Picture Mats Mattes with White Core Bevel Cut for 11x14 Photo + Backing + BagsOur acid-free whitecore matboards are a 4-ply papermat that provide the aesthetic and design benefits of a bright white bevel. It can be used for matting photos, art, and needlepoint. Also great for crafts, backboards, signs, childrens projects, and..