GE UltraMax™ Electronic Ballast, T8 Fluorescent Lamp, 32 W Lamp, 110/113 W Wattage, 120 to 277 VAC, 0.99/0.43 A, 60 Hz Frequency, Instant Start, -18 deg C Minimum Starting, Total Harmonic Distortion: <10 %, Power Factor: >0.98/0.99, No Dimmable, 2 Lamps, Ballast Factor: 0.78/0.79, NEMA 1 Enclosure, 70 deg C, 9.5 in L x 1.3 in W x 1.18 in H Dimensions