1) size: 97x97x33mm 2) voltage: 5v/12v 3) bearing: sleeve and ball availible 4) UL CE CSA VDE TUV Specifications:Frame size(mm)50*50*15mmBearing typeball bearing/sleeveRated voltage5v/12vRated speed4000-7000RPMMax air flow3.4-6.0CFMMax pressure1.49-5.08inch-H2OMax noise24.3-32dBFunctionsby impedance,FGSafety approvalsCE ROHSDielectric Strength 5mA max at 1500VAC for 1 min between lead wire and ...