The 9kw Standard Commercial heats up to 450 cubic feet (length x width x height). It?s a freestanding sauna heater ideal for commercial settings.. Saunacore heaters offer both outstanding safety and energy saving features, as well as sleek, high technology design that can be used wet or dry. 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 the popular Mercuri Digital Control. Includes Sauna Stones. Specifications: 240v/1ph, 37.5 Amps, 8 Gauge Wire ? 208v/3ph, 25 Amps, 12 Gauge Wire; Dimension: 21?w x 31?h x 19?d This product ships within 2 - 3 weeks from time of order.