Amerec Designer B 4.5KW Sauna Heater with RocksThe Designer B 4. 5KW Sauna Heater provides convenient in room management of your sauna, perfect for installations where external controls are not feasible. Its control system includes a "9+1" timer with a 9 hour time delay function. The controls can be mounted at the bottom, either on the front or side. Features Amerec Designer B 4. 5KW Sauna Heater with Rocks Designer B Heater Specifications For rooms from 100 to 425 cubic feet 16 1 2 W 23 H 11 D