Upgrade to led with these standard a19 shape household light bulbs with a medium base e26. These dimmable bulbs are an energy efficient replacement for incandescent bulbs. At 12 watts, they use 86% less energy while providing as much light as a traditional 75 watts bulb at a bright 1100 lumen output. Long life led technology means up to 25,000 hours of reliable service that is flicker free and instant on at full brightness unlike compact fluorescent bulbs. They are energy star certified, and ul listed for damp location installation and contain no mercury or other harmful chemicals.