Duorail is the smallest 2-circuit rail system available. Duorail, just 3/4 inches tall and 1/2 inch wide, is as small as single circuit monorails. Choosing circuits is as easy as turning the Quick Connect Adapter (LM2-QADP) to face opposite side and attaching it to the rail. Either of two circuits may be independently switched or dimmed, or used together to carry more wattage than a single low voltage rail. Crafted by W.A.C. artisans with precision quality brass components and solid copper conductors, Duorail ensures power up to 50 Amperes (2x25A).