Model:EFB1324SHE-FOOMotor power:33WVoltage:24VCurrent:1.38ABlade diameter :127×127×38mmType: Axial FansBearings : High -precision double ball bearingSpeed :4600RPMAir volume :200CFMVoice tone:58.5dBALifetime:180,000HourFan connector:Three-pin motherboard connectorAdditional features:Speed functionFeatureMaintenance- double ball bearing , long life, With sufficient cooling air volume and pressure .