The Fulham Workhorse 7 is a UL-listed, heavy-duty electronic ballast designed for demanding industrial settings. The 120V, 220W ballast operates up to four lamps and features instant start capability and a high power factor. Dimensions are 19.24? x 1.02? x 1.03?. A five-year warranty is included. Also known as -Fulham 10084 - WH7-120-L Fulham WorkHorse 7 Ballast