HID Replacement LED Bulb, Bulb Dia. 4 in, Bulb Shape ED28, Bulb Style Corncob, Color Temperature 5000K, High Pressure Sodium Wattage Equivalency 320 W, Lumens 18,000 lm, Light Technology LED, Metal Halide Wattage Equivalency 320 W, Shatter- Yes, Voltage 120 to 277V AC, Watts 115 W, Length 8 1/4 in, Bulb Base Type Mogul Screw (EX39), Bulb Housing Plastic, Color Rendering Index 80, Fan Cooling Active Cooling, For Enclosed Fixtures Yes, Bulb Manufacturers Warranty Length 5 yr Limited