To be used with a remote transformer, the flexible center power feed with canopy brings power from a ceiling or wall mounted junction box to the rail when the junction box is not located directly above the rail. Mounts to a standard 4 inch square junction box with round plaster ring (provided by electrician). Finish in Bronze or Satin Nickel. ETL listed. Includes 12 feet of field-cuttable flexible leads. 4.4 inch diameter canopy.