... choice of 10,000h or 20,000h- Recessed Mounted Ballast Available:Voltage Choice Available:² 220-240V 50/60Hz² ... ,60Hz² 90-260V,50/60Hz- Choice Available:IC Standard Ballast, ≥0.99, THD<10%, Life = 30,000 ... Life = 20,000 hours, CE Certified;Normal High Standard Ballast, PF≥0.95, THD<30%, Life = 15,000 ... hours, Pass EMI and LVD Testing;Normal Low Standard Ballast, PF≥0.55, THD<130%, Life = 15,000hours ...