Venture 95575 - MP 575W/BU/BT37/PS/EM/950 550 watt Metal Halide Light Bulb
$55.99
Venture 550 watt - 135 volt - BT37 - Exclusionary Mogul Screw (EX39) Base - 5,000K - Daylight - Clear - Pulse Start - Natural White | Philips Metal Halide HID Light Bulb (MP 575W/BU/BT37/PS/EM/950 95575)