1.dc cooling fan 2.Dimensions:50*50*10mm 3.rated voltage:12/24/48v 4.50-75CFM, 3000-4500RPM 5.Low noise,long-life Frame size(mm60*60*25mmBearing typeball bearing/sleeveRated voltage12/24v/48vRated speed3500-4500RPMMax air flow50-75CFMMax pressure0.15-0.26inch-H2OMax noise27-37dBFunctionsby impedance,FGSafety approvalsCE ROHSDielectric Strength 5mA max at 1500VAC for 1 min between lead wire and ...