Convert your existing fluorescent fixture to LED technology with Feit Electric T848/850/B/LED/16 Direct Replacement linear lamps. These LED Ballast bypass tubes eliminate the need for ballasts. Installation requires basic re-wiring of the fixture but provides greater efficiency and less maintenance due to failed ballasts. It replaces T8 and T12 fluorescent tubes with long-lasting, energy-saving LED. Each 4ft. tube produces 1800 lumens of 5000K Daylight color temperature light using only 18 watts - up to 44% less energy than a 32-watt fluorescent lamp. They are shatterproof and 100% mercury free, providing a safer working environment and easier disposal. These lamps have an average life of 35,000 hours/32.0 years (with average 3 hours per day of use) and are RoHS compliant. Choose a dependable flicker-free bulb for residential or commercial applications.