... motor,air cooler fan motor,YWF4E-400 axial motor,400 air cooler motor YWF4E-400 air cooler axial fan motor,air ... cooler fan motor,YWF4E-400 axial motor,400 air cooler motor . An overview of axial fan ... NOISE dB(A)CURVEYWF4D50038050139013506570/621YWF4E500220501.63501350657010621YWF6D500380500.551809004900/522YWF6E500220506514090049006522 YWF4E-400 air cooler axial fan motor