Unit bearing motor Aluminum case or Cast Iron case Unit bearing MotorVoltage:110-120V or 220-240VFrequency:50/60Hz, Power:2W, 4W, 6W, 9WSpeed ... :1350/1550rpmFeatures: 1) Cast iron or aluminum construction 2) Output: 2W, 4W, 6W, 9W 3) Frequency ... machines, display cases and other fan duty applications. Unit bearing motor 02-5