AC external rotor motor powered duct fan series covers a diameter range from φ100 to φ315 mm, with maximum air volume up to 1,500 m3/h and maximum static pressure up to 800Pa. This external rotor fan series has a compact structure, operates reliably and is both energy saving and efficient. It is designed with low noise, a long service life, and is easy to install.These products are mainly used in households and for commercial duct ventilation.