Enhanced performance, familiar shape Excellent color - Up to 93 CRI (color rendering index);Color stability over life within +/- 200 K;Lamp to lamp color consistency over life;High lamp efficacy (up to 100 LPW);Elite 50W lamp provides 27% more initial lumens as compared to a standard MasterColor ED-17 50W lamp*;Elite 50W lamp provides 50% more mean lumens as compared to a standard MasterColor ED-17 50W lamp+;* MasterColor Elite ED-17 4200K 50W Lamps provides 4779 initial lumnes compared to MasterColor ED-17 50W lamp at 3750 iniitial lumens.;+ MasterColor Elite ED-17 4200K 50W Lamps provides 3823 mean lumens compared to MasterColor ED-17 50W lamp at 2550 mean lumens. MasterColor Elite Ceramic Metal Halide ED-17 4200K Lamps provide excellent lumen maintenance and outstanding performance over time in the familiar ED-17 lamp shape. Application versatility;Universal operating position;Dimension, base and light center length are same as standard MasterColor ED-17 lamps;Available in 50W, 70W and 100W Elite lamps. Ideal for general lighting,downlighting,and flood lighting.