WorkHorse, Electronic, Fluorescent Ballast, Ballast Start Type Instant, Input Voltage 277V AC, Number of Bulbs Supported 1, 2, Max. Bulb Watts 62 W, Ballast Bulb Type T10, T12, T5, T8, Dimming No, Dimming Type No Dimming, Dimming Method No Dimming, Dimming Range No Dimming, Min. Starting Temp. -22 Degrees F WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. -