The Two Circuit/Two Neutral Track Lengths system is ideal for dimming intensive applications. The independent neutrals guarantee that the two circuits are completely isolated. Cross-circuit interference and neutral harmonics are completely eliminated, essential for trouble free dimming. The lack of harmonics ensures superior fixture performance and longer equipment life. Engineered to be a durable, dependable, and simple-to-install lighting solution, the track's polarity ridge also takes the guesswork out of aligning the connector and the track during fixture installation. Track sections are available in white, black and aluminum.