Westinghouse 7752800 3/4-ID by 36-Inch Extension Down Rod, Brushed Nickel Finish Extension down rod for use in rooms with 12-foot ceilings Brushed nickel finish Maximizes cooling benefits of a ceiling fan 3/4-ID; 36 inches long. For this model to provide a common measurement method Image provided ,consumers may use to select the proper size if they do not know the correct size ID designation for their ceiling fan. Tapered threads for a deeper, more stable connection