Knut Bo MURO 120 HTK is a 5 in (120 mm) wall- and ceiling-mounted extract fan with an integrated backdraught damper, adjustable timer and adjustable humidistat. Free-air volume is 170 m3/h, making it suitable for bathrooms, WCs and utility rooms up to typical residential sizes. The humidistat automatically starts the fan when relative humidity rises and the timer continues run-on after switch-off. Country of origin: Italy.