Series KKF air-conditioning fan has advantages of low rotation rate, high efficiency, low noise, compact structure and small size. It is used to ventilate in factories and large buildings, especially suitable for ventilating system of air-conditioning equipment. It is a kind of ideal senior energy-saving fan. Air Pressure: 176~2235Pa Volume of Flow: 3321~19134 cubic meters per hour Machine No.: No.450# ~No.1400#, ten specifications totally.