Knut Bø MURO-Style 150 MHY is a 6-inch (150 mm) wall-mounted bathroom extract fan fitted with a shutter damper, programmable hygrostat and run-on timer. The unit is intended for humidity-controlled ventilation of bathrooms, laundry rooms and other wet areas, activating automatically on rising humidity and running for the set delay before shutting off. Supplied in packs of 8 for multi-unit installations.