Q-PAC ECM fan arrays feature rare earth permanent magnetic motors, electrically commutated to provide high efficiency from 10 to 100% of motor RPM. Direct drive plenum fans are balanced to BV4 and higher, removing the need for vibration isolation. Composite material wheels provide sophisticated blade profiles, affording exceptional fan efficiencies and durability. Fan arrays of any size can be factory mounted in our air handlers or installed in the field with a kit that includes custom designed fan board to fit any air handler, plug and play control and power wiring with an ETL listing, fan array controls for manual and automatic control and native BACnet integration. Replace aging, inefficient fans with compact, quiet, vibration-free ECM fan arrays by Q-PAC.