1. certificate: ISO9001. CE, Pohs, UL. FCC, CCC... 2. Size: 172*172*51mm 3, 110-120V, 220v--230V SA-17251 AC axial ... : 1. certificate: ISO9001. CE, Pohs, UL. FCC, CCC... 2. Size: 172*172*51mm 3, 110-120V, 220v--230V AC Cooling Fan Description ... Model NO.SA17251SA17251--2Dimension(mm)172*172*51172*172*51Motortwo-pole shaded pole motortwo-pole shaded pole motorBearing ...