OA125 Series 26.2±0.5 AC Fan - 115V, 230V, Dual Voltage 120 x 25mm (4.7” x 1.0”) 119.5±0.5 (4.70") 104.8±0.3 (1.03") (4.13") 4.2±.2 (.166") DIA. HOLE THRU TYP. 8 PLACES 104.8±0.3 (4.13") 119.5±0.5 A TI O N OT Frame Impeller Connection Motor Bearing System Insulation Resistance Dielectric Strength Diecast Aluminum PBT, UL94V-O plastic 2x Lead Wires 22 AWG or terminals Shaded pole, impedance protected Tachometer available (5VTTL), input 5 ~24V Dual ball or Sleeve Life Expectancy Ball .