The hpi t plus 250w645 is a250w quartz metal halide lamp with a clear finish this lamp has a ges e40 screw cap hpi lamps emit a clear white colour and offer great colour stability these lamps should be should be used in enclosed fittings and are often used for sports lighting flood lighting and lighting large areas these lamp can be run on hpi control gear as well as son control gear these lamps have an average life of 20 000 hours