1.OEM 2. Quality control and prefential price 3. Size:172*172*51 4 .Voltage:115V/230V/380V Detailed Product Descriptionbrushless fanthe best price,low noise,long operating life,reliable performance,comply with all the relevant certificationAC brushless ,AC brushless motor,case fanInsulation resistance:more than 10m Ω between housing and plus end wire redcolor)at 500V DC.Dielectric strength:0.5mA ...