Feit Electric's 10-Watt (17/20-Watt Equivalent) Direct Replacement (Type A) Non-Dimmable Linear LED Tubes replace F17T8 or T8 and F20T12 or T12 fluorescent and LED tubes. They work with most existing ballasts for quick and easy installation, with no rewiring necessary. Each Linear LED light produces 800 Lumens, emitting the same light output level as traditional bulbs while using less energy. These versatile 4000K Cool White lights provide clean, neutral white light for both living and workspaces. Use them for multi-purpose lighting or task lighting wherever it is important to feel refreshed and ready to get things done. An ideal choice for most fluorescent linear tube replacement applications, use them in offices, garages, workspaces, warehouses and more. Enjoy up to 50% energy savings and lower maintenance costs compared to traditional fluorescent linear lights. T24/840/LEDG2/RP lights turn on instantly, offering flicker-free full illumination with no warmup time compared to fluorescent tubes. They are mercury-free, with a shatter-resistant coating for safe and easy disposal. Each high-quality bulb offers accurate color-rendering, for more vibrant, true-to-life colors. Lower heat emission extends the life of the tube and ends do not turn black or burn with age. The estimated energy cost is only $1.20 per year. Switch to Type A LED linear lights for your space and get up to 50,000-hours of superior light. That's 45.6-years based on 3-hours of daily use.