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Sylvania 64034 M400/U/ED28 400 Watt Clear Metal Halide Lamp. Free Shipping!!! - My Lighting Solutions
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
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Halco MH400/U - Metal Halide 400W Probe Start Bulb