Airflow BV400 Ventilation Unit filter 2 x G4 material 90000322 over-100 the delayed timer function

the delayed timer function

The fan will switch off at the end of the overrun time which can be altered by adjusting the sensor

The RF90BW is a single speed

IPX4 rated with a flow rate up to 260m3/hr (34l/s)

Airflow BV400 Ventilation Unit filter 2 x G4 material 90000322 over-100 the delayed timer functionAirflow BV400 filter 2 x G4 material 90000322 This is a pair of courser grade G4 filters designed to prevent particles, insects and other airborne debris from entering the home. F7 fine filters, used to catch small and often invisible particles such as pollen spore bacterium and dust are also available see model reference 90000323