Bison® Ceramic Tile, Gloss, 11.8125" x 11.8125" x .25". Large tiles are used strategically, surrounded by smaller complementing designed tiles or to produce an even larger art project. 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.