... %~45%. 3,ENEC/TUV/CE Linkable Triphosphor T5 Fluorescent Lighting with Big RelectorProduct Description 1, Specification-14W,21W,28W ... ballast--four configuration for choice: A) IC Standard with chip, PF≥0.99, THD<15%, life ... 110V/120V/220-240V.50/60Hz 5,Lighting Source-T5 pure tri-phosphor tube,Ra≥82,life ... than traditional T8 , T10 tube.2,Good quality with competitive price;3, Instant start, ,no noise, ...