GE UltraMax Ballast, 4 Light Bulb Electronic Fluorescent Ballast for Residential/Commercial

Multi-volt Instant Start T8 Ballast will accept up to 4 or 3 F32T8 lamps, Accommodates multi-voltages from 120 to 277-volts, extra versatile for your unique projects, Anti-striation circuitry helps to eliminate and prevent the spiraling effect from lights, Save on energy with the ultra efficient instant start ballast, more than 90-Percent efficiency, Mounting dimensions: 9-Inch L x 1-Inch W, Mounting slot set 0.3-Inch apart