G13 18 58w lumilux skywhite t8 fluorescent bulbs osramt8 lumilux systems offer excellent light current behaviour high efficiency and efficiencyproduct advantages up to 18 higher light yield compared to conventional t8 basic good profitability through high efficiencyproduct properties very good light current preservation 90 during the entire lifespan of the bulb good colour reproduction level 1b ra 8089 dimmable top quality three band phosphor lumiluxusage areas public build