For 2 years I was really pleased with her. Then she began to flicker sometimes - after only 500 hours of operation. And a few days later I noticed that it was completely charred at the front (see picture). This could end badly! Lumen Star blames me (the LED can only be operated in fully open luminaires, with me but was on the LED a hemispherical coverage) and is not liable - I would also no longer be trusted to use these LED again. The product is highly dangerous and useless in the living area - more than in the basement, the LED would be possibly used as intended: free hanging, as amended and without any cover - a jewel. But if defective lumens Star would also certainly find an excuse ...