The W2E208-BA20-51 is a 230VAC Axial Fan with a wall ring, ball bearing, terminal power connection and 1-phase 2-pole motor with operating capacitor. Die-cast aluminum housing, impeller of sheet steel, directly welded onto rotor. External rotor shaded pole motor, mounting from either face using two 4.3mm holes, electrical connections via 2 flat pin terminals of 2.8 x 0.5mm. Counter-clockwise direction of rotation seen on rotor, air exhaust over struts air flow direction.