... 59% 2.Spain Supplier 3.9W,14W,18W,20W,27W,28W,30W, 4.Patent product. T5 28W fluorescent lamp Item description:1 ... *28.5*28.5mmLuminous Flux: 2800LmFeature:1.Replace the T8 fluorescent lamp directly and energy saving up to 63%, immediate return ... working voltages range. 4 different adapters Installation Examples: T5 28W fluorescent lamp