PHILIPS 30347-9 150W High Intensity Discharge (HID) Lamps - High Pressure Sodium Bulbs - Amazon.com
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Feit Electric 400-Watt ED28 Shape Clear Metal Halide High Intensity Discharge E39 Mogul Base HID Light Bulb (1-Bulb) MH400/U/ED28/HDRP - The Home Depot
What is High Intensity Discharge Lighting (HID)? - Definition from Maximum Yield