Ge240res120-diy, electronic 2 lamp ballast for the following bulbs: f12t9, f8t9, f40t12, f25t12, f34t12, f30t12, starting temperature 0 degrees Fahrenheit, normal ballast power factor, .87-.98, 9.5"L x 1.3"W x 1.0"H, high efficiency 120V, Rapid start, to be used in residential applications.