Convert your existing fluorescent fixture to LED technology with the Feit Electric T1248/850/LEDG2/2 LED lamps 2-packs. These T12 lamps produce 1800 Lumens of 5000 K Daylight color temperature light while using only 18W 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 hr/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.