Blauberg Force 100mm (4") High Pressure Centrifugal Bathroom Extractor Fan - FORCE100

This extractor fan features a centrifugal impeller (forwards-curved blades) which makes it more capable in higher-static duct runs compared to typical axial fans. With a 100 mm duct connection it offers up to 122 m³/h (~34 l/s) airflow in its standard version.  It includes an anti-back-draft shutter to prevent reverse airflow when the fan is off. 

In terms of build & performance, the fan is powered by a German-engineered AC motor and is backed by a 5-year warranty. Noise levels are modest for this class: around 36 dB(A) at 3 m for the basic unit. Power consumption is quoted from about 16 W for the standard model.

From the control options and installation viewpoint, this model comes in several variants: standard (on/off), pull-cord (S), run-on timer (T), humidity sensor (H), PIR sensor (IR). It’s suited for wall or ceiling mounting and works well in bathrooms, wet-rooms or other spaces where duct resistance might be high. When installing in a bathroom you’d still need to ensure proper wiring (RCD protection if required for zones) and choose the variant that matches your control preferences.