Upgrade your fluorescent bulbs with energy-efficient LED plug and play light bulbs, a direct replacement with no ballast bypass required. They are instant on at full brightness with no buzzing or flickering. With a life span of up to 50,000 hours, you will be required to replace difficult-to-reach bulbs less often. You will save maintenance costs and save energy at the same time. Our PLL bulbs feature a 2G11 4-Pin base and can be used for both commercial/residential locations. Please shop with confidence as these led bulbs are UL Listed and have been tested to meet their rigorous safety standards. They are also ROHS Certified. Unlike fluorescent bulbs, they contain no harmful chemicals and do not require special handling or disposal.