Discharge lamps have specific advantages over tungsten halogen lamps: in addition to high luminous flux and outstanding energy efficiency, they have a long service life. There is no formal distinction between washlights and downlights. The internal washlight reflector directs the light uniformly onto the wall, while the downlight effect remains unchanged.

All the Lightcast washlights have cast aluminium housings which are designed to provide optimum thermal properties according to their respective technical requirements. Other typical Lightcast features are the cast aluminium mounting ring and the four-point mounting which allows luminaires to be installed without tools. The Darklight technology combines the maximum visual comfort with the maximum light output ratio.