Ballast, Programmed, 26 W, 277 V Ac, 0.54 A, CFQ26W/G24Q Shape, Non Dimmable, 2 Lamps, 4.98 In Length, 2.4 In Width, 1 In Height, 1 Ballast Factor, 0.98 Power Factor, 50 to 60 HZ, Metal Housing Material, 10 % Total Harmonic Distortion, 5 Yr Warranty, 0.250 KG/Ea