The 4118N/2H7P is a 48VDC Compact Axial Fan with a ball bearing and glass-fiber reinforced PA plastic impeller. This 4100 NU series DC fan comes with a die-cast aluminum housing, UL1007 TR 64 stripped and tin-plated 22AWG lead cable. The motor is protection against reverse polarity and blocked rotor. The direction of rotation is clock wise direction viewed toward rotor and the air intake over struts and the housing with grounding lug for screw M4 x 8 (Torx). The 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.