... saving 30%~45%. 3,ENEC/TUV/CE Linkable Triphosphor T5 Fluorescent Lighting with Big RelectorProduct Description 1, Specification-14W,21W,28W,35W2 ... efficacy. Product Feature 1, Energy saving 30%~45% than traditional T8 , T10 tube.2,Good quality with competitive price;3, Instant ... , 38% less usage of glass and phosphor powder compared to T8 lamps.5, Good Color Rendering Index6,Pre-heat function: make ...