Osram 400w PowerStar HQI-BT/D

1 x 400w Osram Powerstar HQI-BT tubular quartz metal halide lamp.
These are quite bright and have a lovely daylight colour with very good CRI.
The bulged outer jacket was to solve a problem of the outer sometimes reaching softening temperature and being "sucked in" when used horizontally.
Luminous flux and CCT varies according to what gear the lamp is ran on as per the datasheet.


12,000 hours.
35,000lm SON gear. 27,000lm MBF gear.
5200k SON gear, 5900k MBF gear.
CRI 90%

120v @ 4a SON gear. 3.5a MBF gear.