Feit Electrics 12 W direct replacement (Type A) non-dimmable linear LED tubes replace 15W F15T8 or T8 fluorescent and LED tubes. They work with most existing electronic ballasts for quick and easy plug-and-play installation, with no rewiring necessary. Each Linear LED light produces 1000 lumens, while using less energy than fluorescents. These versatile 4000K cool white lights provide clean, neutral white light for both living and workspaces.