Features and specifications: 1) Luminous efficiency is 104 Lm, 30% higher than common fluorescent lamps 2) Nice color rendering, 20% higher than similar grade T8 fluorescent lamps 3) 2,000 hour operating life with Opple ballast 4) Luminous flux of 14W is equivalent as the T8 18W 5) Works normal under low temperatures 6) 0.5-0.6 aluminum brackets 7) Smooth, polished surface provides 100% reflectivity 8) Input and output connector in one fixture 9) Easy to install 10) Voltage: 220/110V 11) Frequency: 50Hz 12) Power: 28W 13) Power factor: 0.60H Outer packing: 25pcs/ctn Carton dimensions: 1246 x 170 x 255mm