Osram HQI-TS 70 W/WDL. 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: Dimensions & weight Diameter 19.0 mm Length 117.0 mm Light center length (LCL) 57.0 mm