Sunlite MP400/U/MOG/PS 03664-SU 400-watt Protected Metal Halide Bulb, Mogul Base, Clear - High Intensity Discharge Bulbs - Amazon.com
Feit Electric 400-Watt ED28 Shape Clear Metal Halide High Intensity Discharge E39 Mogul Base HID Light Bulb (12-Pack) MH400/U/ED28/HDRP/12 - The Home Depot