Fans are wall, ceiling or lowered ceiling –mounted. The fan body, impeller or back draught shutter are made of high quality material. The impeller of electric motor is made of aluminium alloys, material resistant to heat what guarantees better cooling and protection against fire. IP32 protection class enables the fans to operate in highly wet and aggressive environments. MM fan with the light sensor (T+LRT) provides the start-up of the fan at the moment of light turning on and the timer provides the fan to operate for another 5 minutes after the light is turned off. The supply includes diameters of 100 and 120 mm. Packaging on pallets.