DeltaModel AFC0912DFDimension 92*92*32mmBearing Double Ball BearingStard Voltage 12VCurrent 1.43AS peed 4500 RPMPower 17.16WN oise 42DBMaintain optimal continuous running time of 180, 000 hoursFan Interface 4-pin Interface (see picture) Features Maintenance- double ball bearings, long service life, with adequate cooling air volume air pressure