Ge240rsmvn-diyb, electronic 2 lamp ballast for the following bulbs: f40t10, f40t12, f34t12, f30t12, f30t12/wm, f20t12, starting temperature -20 degrees Fahrenheit, normal ballast power factor, .87-.98, 9.5"l x 1.3"w x 1.2"h, high efficiency multi-volt 120-277, rapid start.

• 2 lamp ballast
• 2 F40T12 bulbs, but can be used for others
• -20 degree F starting temperature
• High Efficiency Multi Volt (120-277)
• Rapid Start