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Proceedings of Mechanical Engineering Research Day 2017: - Google Books Result

The lifespan of a metal halide is approximately 20,000 hours whereas LED high bay lamps is 50,000 hours of use. Using LED high bay bulbs will cut your maintenance cost in 1/3 to 1/2 with reduce bulb changes, which are often very difficult due to the hard-to-reach placement of high bay lighting. Metal halides require more ...