Osram hqi ts 150 wndl a hqi ts lamp is a double ended metal halide lamp with high efficiency areas of application for the lamp include shop interiors shop windows foyers and reception areas museums exhibitions pedestrian zones and public squares and can also be used in approved enclosed luminaires the lamp has an average life of 12 000 hours and is available warm white wdl neutral white ndl daylight d cool daylight cd dimensions and weight for the product are as follows