Say goodbye to waiting for old fluorescent tubes to ‘warm up’ after turning on the switch with Hyperikon’s 4ft 18W Glass, Frosted Single-End Powered T8 LED Tube. This T8 4ft LED light tube turns on quickly without any noises or flickers, is designed to be reliable and super bright throughout its 45000+ hour-lifespan. Hyperikon single-end powered tubes are perfect for LED conversion and can be installed quickly and simply via an energy-saving ballast bypass. These features make this LED tube ideal for both, indoor and outdoor use. Moreover, this T8 LED light can work under temperatures of -25°F to 140°F. The frosted glass LED lighting is DLC certified and UL-listed and backed up by our 5-year unlimited warranty.