Sunlite 82056-SU LED Round Slim Downlight Retrofit Fixture 4 Inch, 10 Watt, Dimmable, 650 Lumen, 1 Pack, 50K - Super WhiteSize:1 Pack | Color:50k - Super White These 4-inch Round ultra slim downlights from Sun lite feature innovative technology that provides down lighting without all the labor. Use for new installations or as a retrofit replacement for existing recessed lighting. Perfect for residential, commercial, retail, office, hospitality and educational institutions. Built-in long life LED technology means 36, 000 hours of maintenance free service. No ladders to climb or difficult to reach bulbs to replace. With an annual energy cost of $1. 2 (based on 3 hrs./day $0. 11 per/kWh) you'll save over 80% versus traditional bulbs. These dimmable fixtures are instant on with no warmup time. And no flickering or buzzing like fluorescent bulbs. They are ETL Listed for damp location installation and Energy Star Certified.