The 4650X is a 230VAC Axial Fan with Sintec sleeve bearing and terminal power connection, external rotor shaded pole motor. Metal fan housing and impeller. Air intake over struts, clockwise direction of rotation looking at rotor. Mounting from either face using four 4.3mm holes, terminal with 2-flat pin of 2.8 x 0.5mm, fan housing with ground lug for screw M4 and UNC with 2-curve.