Twin RailThe conductor is extruded brass round tube. Standard lengths are 4' and 8'. Bendable at the factory to 18" radius. Field cuttable. Spans up to 42" between supports. Twin Rail is rated for 300w at 12v and 600w at 24v. Type Number Finish 4' Twin Rail TR4-505-PNTR4-505-AL Polished NickelAluminum 8' Twin Rail TR8-505-PNTR8-505-AL Polished NickelAluminum