Range of single-ended, compact, high-efficiency, discharge lamps with a stable colour over lifetime and a crisp, sparkling light. 150W 2950K Warm white lamp with 12000 hour average lamp life Length 110mm / Diameter 20mm Warm or cool white colour impression Allows small-size luminaires designs that give high beam intensities High lamp efficacy results in low operating costs and low heat generation Must be used in closed luminaires with a hard-glass cover Must be used in combination with a ballast and an ignitor