The Monorail Sloped Ceiling Rigid Standoff by Edge Lighting Monorail field cuttable rigid standoff with adapter for use in sloped ceiling applications. Use a standoff every 3 feet of rail. For best appearance, place a standoff at every point where two pieces of monorail join together. Available in 2, 6, 12, 24, 36, 48, or 96 inch lengths. Must be used with sloped ceiling power feed connectors. Finish available in satin nickel, polished nickel, or antique bronze. ETL listed.