... or 20,000h- Ceiling mounted or Pendant Mounting.Ballast Available:- Voltage Choice Available:220-240V, 50/60Hz110 ... -120V, 50/60Hz90-260V, 50/60Hz- Ballast Parameters Available:IC Standard Ballast, PF≥0.99, THD≤10%, Life ... 20,000 hours, TUV CE Certified;Normal High Standard Ballast, PF≥0.95, THD≤30%, Life = 15, ... safety issues. T5 double tube fluorescent lamps industrial lighting fixture with PC cover