The 6224NH is a 24VDC Axial Fan with ball bearing and electronically commutated external rotor motor, fully integrated communication electronics with electronic protection against reverse polarity, blocking, electronic motor current limitation in the start-up phase when rotor is blocked, mounting from either face using two 4 fiberglass-reinforced plastic PA impeller and metal fan housing 3mm holes, terminal power connection. Axial compact fan is suitable for high air performance with moderate pressure build-up. The flow of air through the fan blades is parallel to the rotation axis.