Double-envelope, single or double ended metal halide lamps
All types are UV block for reduced health and fading risks
Quartz discharge tube containing high-pressure mercury and a mixture of dysprosium, holmium and thallium halides (MHN-TD)
Restricted burning position
Indoor applications - accent lighting, general lighting in downlighters e.g. in shop and malls
Downlighters, uplighters and wall-washers e.g. in shops and malls
Outdoors - floodlighting monuments, facades and billboard