Halco 108280 - MH400/BU/PS 400 watt Metal Halide Light Bulb($23.99Value)
Halco 400 watt - ED37 - Mogul Screw (E39) Base - 4,000K - Cool White - Clear - Pulse Start - ProLume | Halco Metal Halide HID Light Bulb (MH400/BU/PS 108280)