The Monorail Out-Rigger Power Feed by Edge Lighting Monorail out-rigger power feed mounts to a standard 4 inch electrical box with plaster ring or an octagon box. The field-cuttable out-rigger cantilevers the rail up to 36 inches from the wall. Use with out-rigger standoffs and remote transformers, sold separately. Finish available in polished nickel, satin nickel or antique bronze. ETL listed.