This is an Osram HQI-E 250w lamp coated with an E40 base. These lamps come in colours Neutral White (NDL) and also in Daylight (D) and have an average life of around 12,000 Hours. Areas of application include factories and workshops, exhibitions halls and trade fairs, sports halls and multi-purpose halls and also in approved enclosed luminaires. The lamp is available in clear and coated versions.