Advance Electromagnetic Fluorescent Ballast, Series: Standard, T9 Lamp, 32 W Lamp, 120 VAC, 0.8 A, 60 Hz Frequency, Rapid Start, 50 deg F Minimum Starting, Total Harmonic Distortion: 15 %, Power Factor: 0.7, 2 Lamps, Thermal Protection: Class P, Ballast Factor: 0.7, ANSI C82.1 Ballast Grade, Metal, 6.5 in L x 2.38 in W x 1.5 in H Dimensions