DC brushless blower fan 1.Size:97*97*33(mm) 2.Rated voltage:12V/24V 3.Certification: UL, TUV, CE, RoHS centrifugal extractor fan :1.Size:97*97*33(mm)2.Rated voltage:12V/24V3.Certification: UL, TUV, CE, RoHS4.Low noise ,good quality.5.The blower fan is more detailed information please refer to the chart: