A dual feed canopy is mounted to the ceiling above the center of the Monorail run. It brings power to the Monorail run from a dual feed remote transformer (sold separately). The low-voltage leads from the remote transformer are connected to the canopy leads inside the electrical box and the canopy mounts to the electrical box. Isolating connectors are included to isolate power feeds from each other. 4 inch round canopy mounts to a standard 4 inch electrical box with round plaster ring (provided by electrician). Finish available in Satin Nickel or Antique Bronze. ETL listed. 4 inch width x 2.5 inch height x 4 inch length.