The W2E142-BB05-87 is a 115VAC Axial Fan with a wall ring, ball bearing, terminal power connection and 1-phase 2-pole motor with operating capacitor. Die-cast aluminium 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. 24W Rated power Noise 57.0 dB(A) Power (Watts) 28.00W RPM 3350 RPM Termination 2 Terminals Operating Temperature -40 ~ 176°F (-40 ~ 80°C)