Upgrade to LED with these standard A19 shape household light bulbs with a GU24 twist and lock base. These Dimmable bulbs are an energy efficient replacement for incandescent bulbs. At 9 watts, they use less energy while providing as much light as a traditional 60 watts bulb at a 800-lumen output and have 90 CRI. 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 ETL for enclosed fixtures and Title 20 certified. These LED light bulbs meet California's Title 20 criteria.