58038 : 150W ED28 Metal Halide Lamp, 4000K | Build.ca
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Sunlite MH400/U/MOG 400-Watt Metal Halide ED37 Bulb, Mogul Base, Clear : Amazon.ca: Tools & Home Improvement
The Metal Halide Lamp - How it works and history
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CEP METAL HALIDE LAMP,BT37,1000W - HID Lamps and Bulbs - WWG14V999 | 5910 - Grainger, Canada