The Monorail 12V Straight Kit 300W Surface Magnetic by Edge Lighting Monorail 12 Volt Straight Kit with 300 Watt Surface Mount Transformer is available in a 4, 8, 12, 16, 20, 24, 28 and 32 foot length. Finish in Satin Nickel, Antique Bronze or Polished Nickel. Kit includes a 300 watt 12 volt surface mount magnetic transformer, straight run of Monorail, 1 inch standoffs for every three feet of rail, and two pairs of end caps. Dimmable with a 600 watt low voltage magnetic dimmer, sold separately. Fast Jack 12 volt pendants and heads available, sold separately.