... 45% 3,ENEC,GS,CB Approved T5 Indoor Light Fixture Product Description 1, Specification-8W,14W,21W,28W ... oxidation film on the aluminum reflector, improve more light efficacy. Product Feature 1, Energy saving 30%~ ... 45% than traditional T8 , T10 tube.2,Good quality with competitive price ... usage of glass and phosphor powder compared to T8 lamps.5, Good Color Rendering Index6,Pre-heat ...