"Convert your existing fluorescent fixture to LED technology with the Feit Electric T1248/850/LEDG2/2 LED lamps two-pack. These T12 lamps produce 1800 lumens of 5000K Daylight color temperature light while using only 18 watts - up to 50% less energy than a standard fluorescent lamp. Get instant on to full brightness even in sub-zero temperatures with relatively cool running performance. Each shatterproof lamp is rated for 35,000 hours / 32 years service life, is RoHS compliant and 100% mercury free. Choose a dependable flicker-free bulb for residential or commercial applications. Installation is simple: No replacement / removal of ballast or installation of LED driver required."