... speed controll 4: energy saving and intelligent ECcircular inline fan ECCK315 Technical parameter: TypeVoltageAir flowMax PressureSpeedPowerCurrentNoiseWeightVACCFMPaRPMWAdB(a)kgECCK315230105542020001451.1724.5Technical features ... ventilation system 2: Commercial building ventilation EC circular inline fan ECCK315