Bison® Ceramic Tile, Textured Surface Matte with Spacers, 4.3125" x 4.3125" x .25". Excellent tile for photo or art reproduction, dependable, and durable for walls. Production for these tiles requires the use of an 1/8" Green Heat Conductive Rubber Pad and a Nomex felt pad, 1/8" thick and at least an inch larger than the tile, sold separately. This tile does not have lugs.