The Westgate Mfg T8-4FT-TYPB-14W-40K-F is a 4 ft. 14W Type B T8 LED glass tube lamp compatible with single- or double-ended direct-wire ballast-bypass configurations in commercial fluorescent retrofits. Delivering 1,800 lumens at 4000K across a wide 180 beam angle, it offers IP20 protection and operates across a broad temperature range of -13F to 113F. UL listed with a 50,000-hour rated life and a 5-year warranty. Frosted glass lens finish.