Ultra thin recessed downlight. Housing is made of die-cast aluminium. The light guide and diffuser are made of non-yellowing PMMA with an opal matte finish. It features ceiling installation with a spring system, and the mounting depth depends on ceiling strength. The downlight can be directly covered with thermal insulation material. It is suitable for through-wiring with separately available accessories. A surface-mounted housing is available as an accessory for all sizes. Retrofittable decorative cylinders made of chintz fabric are also available as an accessory, optionally with a satin finish plastic diffuser. A through-wiring box (5 pole) is available as an accessory.