This is an osram vialox nav t 250w super 6y lamp this type of lamp has an exceptionally long life of 48 000 hours on average and can be made dimmable on conventional control gear and electronic control gears the most common areas of application for the lamp include streets outdoor lighting industrial installation and is suitable for use in open and enclosed luminaires and outdoor application in suitable luminaires the nav e lamp is up 50 more energy saving when replacing mercury vapour lam