This HUUM Cliff sauna heater package comes complete with the traditionally designed CLIFF 6.0kW sauna heater UKU control (WiFi optional) and sauna stones - everything you need to build your dream sauna experience. The package has been combined for use in sauna rooms up to 353 cubic feet (CF). CLIFF heater also comes in an even slimmer 3.5 kW wall-mounted model which is particularly suitable for very small sauna rooms.