The Omnidirectional A23 Non-Dimmable LED 6 Pack is ideal for bright light source applications, especially where the light bulb is visible. Perfect for commercial applications, barn lighting, and decorative outdoor lighting fixtures. Suitable for use in damp locations and enclosed fixtures. These LED bulbs light up instantly and work in the 120-277 voltage range. They can replace high lumen 277-volt bulbs operating on 277V building mains without a transformer or ballast. LEDs contain no harmful mercury, reducing their impact on the environment.