1900 The bathroom fan Fan 1900 DH W125 offers a convenient and effective solution against humidity, unpleasant odours and mould growth in the bathroom. With a diameter of 125 mm and an adjustable humidity sensor (range between 40 % and 90 %), this quiet and powerful fan ensures a pleasant room atmosphere at all times. The fan is activated automatically when the set humidity level is exceeded, ensuring reliable operation without manual intervention. With a particularly low noise level of just 38 dB(A), the bathroom fan operates almost inaudibly at an air flow rate of 145 m³/h. The FAN1900 DH also offers an adjustable run-on time of 3 to 30 minutes. The integrated non-return flap reliably transports the exhaust air to the outside and prevents cold outside air from entering the room. Installation is also straightforward: Using simple standard tools, the fan can be attached to both the wall and the ceiling. The elegant and timeless design in the exclusive Bosch style fits perfectly into any bathroom and provides an aesthetic upgrade.