The Bluewind Vermiculite Lightweight Insulating Firebrick is perhaps the best insulation for the industry and large commercial buildings. It is made of non-asbestos expanded silver vermiculite and inorganic fillers making it a firebrick that meets the standards of thermal insulation and toughness. This product is suitable for industrial furnace application because it can provide transition refractory lining and backup insulation which results in high performance, energy saving as well as cost-effective operation.