golden state art, acid free, pack of 50 11x14 white picture mats mattes with white core bevel cut for 8x10 photo + backing + bags golden state art backing is also 4-ply thick with both side white. matboard can be used for matting photos, art, and needlepoint. also great for crafts, backboards, signs, children's projects, galleries, to sell, shows, art shows, and school projects.