Frame: Die-Cast Aluminum Painted Blade: Plastic P.B.T. Insulation Resistance:10MΩ at 500VDC between lead and frame Dielectric Strength:1 min at 1500VAC/50-60HZ ,current <5mA Operation Temperature: -20ºC 80ºC Operation Humidity: 20% 85% Working voltage:85V 125V for 110V and 190V 250V for 220V Life at 25ºC: Ball bearing 60,000hr and sleeve bearing 30,000hr Packing: 50PCS/CTN MEAS: 46cm×21cm×21cm G.W.: 14KGS N.W.: 12KGS Conversion Table of Airflow