Led Republic Corn Bulb, Street and Area Lighting, 54-Watt (250-300 Watt Replacement), Large Screw Base (E39), 5000K (Crystal White Glow, 360&deg; Flood Light, Metal Halide Replacement, UL-Listed 54-watt corn light,Universal application. Replaces any current HPS' or HIDs. Voltage range of 85-325V and 50/60Hz. IP66. Note that ballast must be bypassed when replacing Metal Halides or HPS 54-watt corn light,Universal application. Replaces any current HPS' or HIDs. Voltage range of 85-325V and 50/60Hz. IP66. Note that ballast must be bypassed when replacing Metal Halides or HPS LDL-qualified and thus eligible for rebate- and incentive programs from participating utility members. For your safety all Led Republic products are UL-classified ETL (5003513) ,DLC ; E39 base,fast &easy installation. Led Republic is the only authorized one to sell LED Republic products, if you are not purchased from "LED Republic", there will be NO Wanrranty, and please immediately complained to the Amazon, you can get a full refund!!