AC Axial Fan SIZE: 80x80x38 Frame Type: Alumium painted with plastic UL94V-0 Impeller: Thermoplastic UL94V-0 P.B.T. Insulation Resistance: Min. 100 Mohm at 500 VDC between terminal {wire} {+} and frame Bearing: Double ball bearing / Sleeve bearing Dielectric withstand: 1500 VAC for 1 second between terminal {wire} {+} and frame Voltage: AC 110V, 220V Life Expectancy: for Ball bearing 60,000 hours at 20 Life Expectancy: for Sleeve bearing30,000 hours at 20 Operating Temperature: -20 degrees ~ 85 degrees ordinary humidity Storage Temperature: -30 degrees ~ 140 degrees ordinary humidity Ingress of Protection: IP44 / IP55