Convert your existing fluorescent fixture to LED technology with the Feit Electric 4ft. LED Plug and Play 2-pack lamps. These 5000K daylight and non-dimmable tubes produce a similar fluorescent lamp output, uses 18 watts of electricity and up to 44 percent less energy than a standard fluorescent lamp. Get instant on to full brightness even in sub-zero temperatures with relatively cool running performance. Choose a dependable flicker-free bulb for residential or commercial applications. No replacement of the ballast or installation of LED driver or removal of old ballast is required.