Intended for use in place of fluorescent lamps, T8 LED retrofit tube lights have integral drivers and connect directly to line voltage for optimized operation and installation. No ballast is required, and ballasts typically last for 50,000 hr. Rated for 35,000 hr, mercury-free lights consume 19 W, offer 80+ CRI, and exhibit 100 lm/W efficiency. UL-listed and DLC-qualified products come in 2 and 4 ft lengths as well as 4100K and 5000K color temperatures.