This Manrose MF100T is a 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. It can be mounted in a variety of applications and is suitable for use with either rigid or flexible ducting (100mm diameter). Features include high-quality ball bearing, long-life motors, continuously rated and warranted for a minimum of 30,000 hours or 3 years. It has 3 speed settings selected via an 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 (requires a permanent live, switched live and neutral connection for timer functionality).