Osram Vialox light bulbs are light sources that are regularly used for lighting roads, monuments, other buildings, in industrial installations and as general outdoor lighting. The Osram Vialox gas discharge bulbs fall under high pressure natrium lighting. All light bulbs within the serie are energy-efficient and possess a long lifespan. The average lifespan of Vialox gas discharge light bulbs are between 9.000 and 48.000 burning hours. Due to the long lifespan, the light does not have to be changed often, what ensures less maintenance costs. To make the light bulbs work, you will need a ballast for gas discharge bulbs.