The ED23.5 filament LED bulb is the perfect energy-efficient replacement for 100-watt HID bulbs and an excellent alternative to corn cob LED bulbs. The reliable LED bulb's bright light is perfect for indoor and outdoor fixtures such as post-top lanterns and wall-pack lighting. It features universal mounting positions, a voltage range of 120 - 277 volts, and built-in surge protection. This high-lumen LED bulb can be used for geographical areas affected by voltage fluctuations and can withstand momentary surges up to 2000 volts that may occur in industrial installations. A significant advantage of LED over HID is that there is no color shifting so the color temperature will remain constant over time. Westinghouse is a trusted global brand. We know lighting and offer products with exceptional quality, reliability, and functionality.