... bearing Voltage:12/24/48V Certification:CE UL TUV ADDA Solar Cooling Fan Detailed Specification 1Frame size(mm)120X120X252Bearing typeball bearing3Rated ... pressure:12.7mmAq7Maxiam noise58.6dBA8Functionsby IC,by IC with FG, PWM,PWM+FG9safety approvalsCE,TUV,UL,cUL10Electric Strength 5mA max at 1500VAC ... ,26; UL1061 AWG2618Plastic Material Motor protection and polarity protection ADDA Solar Cooling Fan