Knut Bø MURO-STYLE 150 MHT is a 6" wall or ceiling extract fan delivering 295 m³/h unloaded, with an electric damper, adjustable hygrostat and adjustable timer. The damper closes the duct when the fan is off, limiting back-draught, while the humidity and time functions automate operation to occupancy patterns. It is intended for bathrooms, laundry rooms and other spaces with variable moisture loads. Typical use is in residential renovation and new-build where humidity-driven ventilation is specified.