1. T5doubl tube fixture for commercial and indutrial lighting 2. PF>0.99, THD<10%, ... 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 ... Life = 15,000 hours, Pass EMC and LVD Testing;Normal Low Standard Ballast, PF≥0.55, THD≤130%, Life ...