HID Replacement LED Bulb, Bulb Dia. 4 1/2 in, Bulb Shape Cylindrical, Bulb Style Low Bay, Color Temperature 4200K, High Pressure Sodium Wattage Equivalency 175 W, Lumens 4,341 lm, Light Technology LED, Metal Halide Wattage Equivalency 175 W, Shatter- Yes, Voltage 120 to 277V AC, Watts 50 W, Length 7 3/4 in, Bulb Base Type Mogul Screw (E39), Bulb Housing Polycarbonate, Bulb Operating Position Universal Burning, Color Rendering Index 80, Fan Cooling Active Cooling