The Kw 3 SE, 3kw Ultimate heats up to 150 cubic feet (length x width x height). Enjoy all Stainless Steel construction and Industrial low-density silver solder Incoloy elements with this model. Saunacore heaters offer both outstanding safety and energy saving features, as well as sleek, high technology design. The innovative ventilation system allows these heaters to run up to 50 degrees cooler than most heating units on the market. With Saunacore sauna heaters, you get your choice of mechanical controls built into the base of the heater, or the popular Mercuri Digital Control. This heater is available in 240 volt, 1 phase. Includes Sauna Stones. Specifications: 240v/1ph, 12.5 Amps, 12 Gauge Wire; Dimensions: 15?w X 23.5?h X 6?d This product ships within 2 - 3 weeks from time of order.