The Westgate Mfg T8-4FT-18W-50K-D-C is a 4 ft. 18W T8 LED plastic tube lamp designed for direct-wire ballast-bypass retrofits in commercial and institutional fluorescent fixtures. Delivering 2,150 lumens at 5000K with a 120 beam angle, it wires single-ended (one end N+L) and supports dimmable direct A/C operation for compatibility with standard dimming controls. UL listed with a 50,000-hour rated life and a 5-year warranty. Clear lens finish on an aluminum + PC construction.