The 7.5kw Steam Vaporizer heats up to 375 cubic feet (length x width x height). Enjoy all Stainless Steel construction, Industrial low-density silver solder Incoloy elements and a manual-fill water reservoir for continuous steam throughout your sauna session. 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 mechanical wall-mount controls for mounting adjacent to your door outside of your sauna. You can also upgrade to the popular Mercuri Digital Control. This heater is 240 volts. Specifications: 240v/1ph, 31.3 Amps, 8 Gauge Wire; Dimension: 18?w X 27.5?h X 12?d This product ships within 2 - 3 weeks from time of order.