1.  Dimension:450mmX450mm; 
2.  190pcs high efficiency LEDs; 
3.  Rated Luminous Flux: 3200lm; 
4.  Viewing Angle: 100~120 degree; 
5.  Color Temperature:5500K; 
6.  Central Light Intensity:1200cd; 
7.  Color Render Index:  > 70; 
8.  Work Temperature: -20℃ ~ +50℃. 
9.  Installation mode: suspended mode/built-in mode.