Transformer Cooling Fan, Blade Diameter 16 in, Air Flow 3,100 cfm, Voltage 115/230V AC, 60 Hz, Phase 1, Fan Mounting Type Guard Mount, 3.1/1.5 Amps, 1,140 RPM RPM, Motor HP 1/4 hp, Max. Ambient Temp. 104 Degrees F, Bearing Type Ball, Number of Blades...