Convert your existing fluorescent fixture to LED technology with the Feit Electric FC12/840/LED LED circular fluorescent replacement. This 4100K Cool White lamp produces 2000 lumens using only 20 watts - up to 37.5% less energy than an equivalent fluorescent lamp. These lamps have an average life of 25,000 hours/22 years, are RoHS compliant, and are 100% mercury free. Installation is easy: no replacement / removal of ballast or installation of LED driver required.