Transformer Cooling Fan Blade Dia 24 In. Air Flow 6800 cfm Voltage 115/230 60 Hz 1 Phase Amps AC 3.4/1.7 Motor RPM 1140 1/3 HP Max Ambient Temp 104 Degrees F Height 27 In. Width 27 In. Max Depth 13-5/16 In. Mount Type Guard Mount Mounting Eye O.C. 19-7/8 In. Motor Type Permanent Split Capacitor Motor Enclosure Totally Enclosed Air-Over Motor Insulation Class B Frame 48Y Yoke Mount Blade Material Cast Aluminum Number of Blades 4 Guards Steel Dimension B Max 23-3/8 In.