The hpi plus bu p 400w745 is a 400w quartz metal halide lamp with a coated finish this lamp has a ges e40 screw cap this lamp should be used in a base up burning position and is protected 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 averag