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
MH Bulb Philips 400W Mogul Base Clr ED37 - Amazon.com
115 Watt - Arcana II Series - Wattage Selectable - E39 LED Corn Bulb -12,900 Lumen - 4000K - Replacement for 400 watt Metal Halide
GE Lighting Metal Halide Light Bulb, ED37 Outdoor Light Bulb, 400-Watt, 36000 Lumen, E39 Mogul Base, White, 1-Pack, Multi-Vapor HID Light Bulb, High Intensity Discharge - High Intensity Discharge Bulbs - Amazon.com
What Does it Take to Replace a 400 Watt Metal Halide? | Fireflier Lighting Limited
Plusrite 400W Clear BT37 Protected Cool White Metal Halide Bulb | MP400/BT37/BU/4K | Bulbs.com