The design of the award-winning HUUM DROP 9 electric sauna heater was inspired by the purest element in nature - a drop of water. This compact 9kW wall-mounted electric sauna heater is engineered for sauna rooms up to 530 cubic feet (CF). Its large rock capacity ensures a consistent, soft high heat. Required control and sauna stones (4 boxes) sold separately. Wood safety rail sold separately. For sauna rooms from 282 - 530 cu. ft.