Upgrade your existing 13W PL fixtures to advanced LED energy-saving technology with the Feit Electric Quad Tube LED Bulb. This 4-pin LED bulb has an output of 600 Lumens and a cool 2700k Soft White light, ideal for general purpose and task lighting. It uses only 5-Watt of electricity - up to 61.5% less than equivalent standard fluorescent bulbs. Feit Electric G24Q Quad Tube PL replacements keep cool regardless of atmosphere, giving them an average life span of 25,000/22.8 years. The estimated energy cost is only $0.60/year. Choose a dependable, general-purpose lighting bulb for residential or commercial applications by choosing Feit Electric.