... down light 1.Dimension: 3-8inch 2.LED quantity: 5-20W 3.Life Time:30-50K Hours 4FCC/PSE/CE certificate ... lasting Operating time(hours)Lumen decrease(%)10000%20000.5%30000.8%40001.4%50002.2%60003.1%3,Application area Available ... for City,Buildings,Plaza,Hotel,Offices.,etc 3-8 inch (5-20W) LED Downlight