Commercial fan are complete with corrosion resistant epoxy-coated metal blades. The aerodynamically curved-tip blade results in maximum air delivery. All metal, no plastic. Permanent lubricated sealed TPI ball bearings. Totally enclosed impedance protected motor. Non-polar, extra heavy duty capacitor. Use solid state infinite speed motor controls or church quiet control (WC103). Heavy cast yoke for easy infield downrod change. Customized downrod lengths over 36 inch available. Also 16 ft cord with plug part# Cord-Wh16.