Upgrade to led with these standard a19 shape household light bulbs with a medium e26 base. These dimmable bulbs are an energy efficient replacement for incandescent bulbs. At 6 watts they use less energy while providing as much light as a traditional 40 watts bulb at a 600-lumen output. Long life led technology means up to 15,000 hours of reliable service that is flicker free and instant on at full brightness unlike compact fluorescent bulbs. Perfect for kitchen dining room living room bedrooms bathrooms closet hallway corridor balcony warehouse basement etc. Color rendering index cri of 80. They are ul listed for damp location installation and contain no mercury or other harmful chemicals. Tested compatible dimmers: leviton 6615-p ipe-04 lutron selv-300p