Upgrade fluorescent fixtures to the latest led energy-saving technology with the Feit Electric 20-watt (32-watt equivalent) 12-inch circline led light. These non-dimmable circular light tubes replace fc12t9 or t9 bulbs, ideal for ceiling fan and fixture applications. Choose between 3500k neutral white, 4000k cool white or 6500k daylight with the flip of a switch. Installation is easy simply plug the new lamp into the existing ballast. No replacement or removal of the ballast is required. These lights offer instant-on, flicker-free full illumination with no warmup time. Each high-quality bulb offers accurate color-rendering, for more vibrant, true-to-life colors. Enjoy lower maintenance costs compared to traditional fluorescent circline lights.