4x4 Bison® Ceramic Tile - Satin White, 4.3125" x 4.3125" X .25"�, Satin with spacers. Beautiful media for color reproduction, dependable, and durable for practical use. 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.