Lutron Hi-lume 3D One 21W T5 Fluorescent Dimming Ballast 120-277V

Hi-lume 3D offers less than 1 percent dimming, efficiency comparable to non-dim ballasts (up to 100 lumens per watt), and the ability to use both 3-wire and digital controls. Combine with EcoSystem controls for energy savings between 40 and 70 percent. Slim profile enclosure. Microprocessor controlled provides a new level of flexibility. Continuous, flicker-free dimming from 100 to 1 percent for T5 and less than 1 percent for T8. NEW T5-HO Linear products, dim to 1 percent. NEW T5 Twin-tube products, dim to 5 percent.