... speed controll 4: energy saving and intelligent ECcircular inline fan ECCK125 Technical parameter: TypeVoltageAir flowMax PressureSpeedPowerCurrentNoiseWeightVACCFMPaRPMWAdB(a)kgECCK12523023569045451030.832743.0Technical features ... ventilation system 2: Commercial building ventilation EC circular inline fan ECCK125