Philips High Frequency Fluorescent Ballast, 347/480 volt, 239/237 watt, 0.69 amp, 50/60 Hz, F54T5/HO Lamp, 3, 4 Lamp, 1 Ballast Factor, Programmed Start, 0.98 Power Factor, -20 deg F Minimum Starting Temperature, 70 deg C Case, 1.7 Inch Overall Width

• Philips High Frequency Fluorescent Ballast, 347/480 volt, 239/237 watt, 4 X F54T5/HO Lamp
• Philips Advance

Philips High Frequency Fluorescent Ballast, 347/480 volt, 239/237 watt, 4 X F54T5/HO LampPhilips Advance