Unit bearing fan motor 1) Cast iron or aluminum construction 2) Output: 2W, 4W, 6W, 9W 3) Frequency: 50Hz, 60Hz Cooling fan motor / unit bearing motor1) Cast iron or aluminum construction 2) Output: 2W, 4W, 6W, 9W3) Frequency: 50Hz, 60Hz 4) Shaded pole and single phase 5) All angle 6) Fan duty, continuous and air over 7) Overload protection 8) Proven unit bearing design 9) UL and CUL listed Unit ...