Enjoy all the benefits of advanced LED energy-saving technology with the Feit Electric ballast bypass horizontal PL LED lamp. This 4-pin 2G11 base glass PL produces 2300 lumens of 4100K Cool White light using only 18 watts - saving up to 55% over an equivalent 40-watt fluorescent. Each lamp has an average life of 30,000 hours/27.4 years, is RoHS compliant, and are 100% mercury free. Choose a dependable bulb for general purpose residential or commercial applications. Use of this PL lamp requires bypassing the existing ballast and rewiring of the fixture.