Plusrite 1024 MH400/U/MOG | 400W Metal Halide Light Bulb
Sylvania 400 Watt Clear ED28 Cool White Metal Halide Bulb | M400/U/ED28 | Bulbs.com
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
Xtrasun Metal Halide (MH) Lamp, 400W, 7200K - Aroma Grow Store