Howard Industries M2/40RS-120 Howard Fluorescent Ballast 120 Volt
Fluorescent Magnetic Ballast: 120V, 630M/780Ma, 76/93W, Rapid Start, 2, 4, F40T12, F40T12/Es, 34/40, 20 Percent Thd, Class P, 60Hz, 50/60 Deg F Min Start Temperature, Series Wiring, Sound Rated Class A