The Monorail 12V 4X300 2-Circuit Straight Kit Remote Magnetic by Edge Lighting Monorail 12 Volt 4X300 2-Circuit Straight Kit with 1 Inch Drop and Magnetic Remote Transformers is available in a 4, 8, 12, 16, 20, 24, 28, 32, 40, 48, 52 or 60 foot length. Finish in Satin Nickel, Antique Bronze or Polished Nickel. Kit includes a 4X300 watt 12 volt remote magnetic transformer, 4 inch round two-circuit feed power canopy, straight run of Monorail, 1 inch standoffs for every three feet of rail, and two pairs of end caps. Remote transformer needs to be located in an accessible area in close proximity to the power feed canopy. Dimmable with four 600 watt low voltage magnetic dimmers, sold separately. Some buzzing may occur on low levels and may be reduced with four dimming de-buzzing coils (TBD-300), sold separately. System not dimmable when one circuit uses halogen fixtures and the other circuit uses LED fixtures. All other combinations are dimmable. Fast Jack 12 volt pendants and heads available, sold separately.