8KW sauna heater, 240V., single phase. Dimensions 12″x20″x24″h. plus 6″spacer from the heater base to keep heater about 4″of the back wall. Electric heater made for dry or wet high temperature sauna. 1. Stainless steel heater is approved and advanced; 2. Heater has hidden elements (less burn the oxygen in the sauna and safe to put water on the rocks); 3. Heater is self-defense. If you touch side of the heater you will not burn yourself; 4. Heater has extra deep compartments for rocks – about 150lbs or up to 90kg of rocks;