5 Year Ballast Warranty. Operate multiple lamps with one ballast. Ballast operates 17w through 32w T8. Replace up to 9 standard ballasts. Efficiently designed to run at cooler ballast case temperatures.
Voltage: 277; For 4,3, or 2 F32-F17T8. Ballast Efficacy Factor: 0.81. Input Watts: 85; Input Current Amps: 0.3. THD: <10%; Lamp Watts: 17-32; 2.44" W x 1.45" H.