FeitElectric's 40-watt Direct Replacement (Type A) High Output Non-Dimmable Linear LED Tubes replace F40T12 or T12 fluorescent and LED tubes. They work with most existing ballasts for quick and easy plug-and-play installation, with no rewiring necessary. These blueish white 6500K Daylight Deluxe White lights allow you to see objects in finer detail and create a vibrant mood for both residential and commercial spaces. Use them in closets to see every wardrobe detail. For retail spaces, gyms, convenience stores, hospitals and high-energy environments these lights encourage activity and alertness. Their higher light output also works in high ceilings and large spaces. T1248HO/865/LED/2/RP lights turn on instantly, offering flicker-free full illumination with no warmup time compared to fluorescent tubes. 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. Enjoy lower maintenance costs compared to traditional fluorescent linear lights.