Our axial fans with external rotor are able to work with condensing and evaporating units with 4 to 16 fins per inch on the heat exchanger. 1.Protection class: IP54 2.CL.B or CL.F 3.Life at 25C: 50000hours 4.Blade dia: 200,250,300,350,400,450,500,550,600,650,710, 5.Sucking and blowing 6.Direction of Rotation:CW or CCW 7.Operating temperature from : -30 60C 8.Blades angle can be set to 35 degrees 9.Bearing system: Ball bearing The specification of our 600serial axial Fans are belows: Item NO.Voltage(V)HZ.CURR.(A)POWER(W)SPEED(R/min)Capacitor(µF)NET WEIGHT(KG)NOISE(dBA)Max airflow(m/h)YWF4S-60022050/603.50750135016147710040YWF4T-60038050/601.508001380/147710840YWF6S-60022050/602.405009101214718060YWF6T-60038050/601.30500920/14718180