AC FAN 120mm x 120mmx 25mm Housing: Die-CastAluminum Painted Blade: Plastic P.B.T. Insulation Resistance: 10MΩ at 500VDC between lead and frame Dielectric Strength:1 min at 1500VAC/50-6OHZ.current< 5mA Operation Temperature:-20âÂÂÂÂ- 80â Operation Humidity: 20%-85% Working voltage: 85V^-125V for 11 OV and 19OV-25OV for 220V Life at 25âÂÂÂÂ: Ball bearing 60.000hr.sleeve bearing 30.000hr