... 3.Ra>80, Luminous Efficiency 80 4.1100-1200 lm 5.CE&RoHS led ceiling panel light 30*30cm 18 watt ... , high power efficiency.4. Uniform lighting surface, wide lighting angle.5. Competitive price, CE&ROHS approved. Product Display Product Comparison ComparisonOther ... Distribution Graph LED Lumen Attenuation: Operating time(hours)Lumen decrease (%)5,0002.310,0005.420,00011.550,00025.2 Product certification ...