Complete with its specular aluminum interior and patented double-wall design, the Daystar Reflector runs up to 75 percent cooler than others. Efficient with 1000-watt high pressure sodium and metal halide bulbs, the Daystar Reflector can accommodate a tempered glass lens and also can accept a flange cooling kit. Measures 12 ½" X 7 3/8" X 18 ½".