Bison™ Tuscan Porcelain Sublimation Tile, 3.875" x 3.875" x .375", Dura Satin White. These tiles have interesting variations, veins and impart a nice texture, especially to old photos. Will not fit Conde Wrought Iron frames.Production for this tile requires the use of a green rubber pad, 1/8" thick and at least an inch larger than the tile. Sold separately:1/8" Green Heat Conductive Rubber Pad