Howard Lighting BAL700TD Fluorescent Emergency Ballast, 600-700 Lumens, Dual Voltage Input 120V/277 VAC (Compatible with 1 Lamp T8, T12, 4-Pin CFL, and 4-Pin Long CFL; 2 Lamp T8, T10, T12, 4-Pin CFL, 4-Pin Long CFL, T9 Circline CFL, U-Bent T8, and U-Bent
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