powerful in-duct mounted mixed flow extractor fan designed to produce higher working pressures for applications that require high air flows, with low relative noise. can be mounted in a variety of applications and are suitable for use with either rigid or flexible ducting (100mm diameter) high quality ball bearing, long life motors, continuously rated and warranted for a minimum of 30,000 hours or 3 years. 3 speed settings selected via internal dip switch performance (on maximum speed): extract rate: 68 litres per second, 245 cubic metres per hour. power consumption 25 watts. sound output 25db(a) @ 3m easy installation and maintenance with the fan assembly easily removed from rigid ducting installations using the specially designed construction. fully building code compliant. beab approved. ce approved class ii - double insulation - no earth required. built in run on timer (see important information at product description below regarding connection requirements) Number of pieces: 1, Weight: 0.00440924524 pounds, Manufacturer: MANROSE