This is an osram nav ts 150w super 4y high pressure sodium lamp the lamp has an average life of 28 000 hours areas of application include industrial installations car parks and court yards buildings monuments bridges and is also suitable for use in enclosed and open luminaires this lamp can be made dimmable if used with conventional and electronic control gear the cap of the lamp is a rx7s 24 and is available in colours 2000k dimensions amp weight diameter 230 mm