The Viessmann 100-W B1HC 19kW 26kW System Boiler Radial Fan NRG 118 is a high-quality boiler part designed for indoor use. Manufactured in Germany by Viessmann, this silver-coloured fan operates on gas/petrol power and has a voltage of 230V. It is a unit quantity of 1 and is specifically designed for the Vitodens model boilers. The fan is an essential component in the heating system, providing efficient air circulation to support the boiler's functionality. Ideal for maintaining optimal heating performance in residential spaces.