High Pressure Metal Halide Lamps are designed to eliminate the need for cover lenses, making lamp replacement easier. These Metal Halide Lamps require enclosed fixtures because of the possibility of hazardous end of life arc tube ruptures which may cause glass bulb fragments to fall from the luminaries. These Metal Halide Lamps require no shut off and protect people and property. High Pressure Metal Halide Lamps are designed to provide continuous operation.