Ge259max-n-diy, electronic 1 or 2 lamp ballast for the following bulbs: f96t8, f96t8wm, f72t8, f40t8, starting temperature: -20 degrees Fahrenheit, normal ballast power factor:.87 - .98, length: 9.5"l x 1.7"w x 1.2"h, high efficiency multi-volt 120-277 instant start.