... 4U lamp with high Luminous flux SH-D4U Saving energy 80%,have more than 8,000hrs life time,High luminous flux,high perfomance, stable light ... beam, no flashing, protect your eyes,The outer casing adopts PBT plastic with fire-proof,high ... the lamp tube is good at color-rendering with high light effect. Better energy-saving capacity.Two color temperatures ...