Modular construction consisting of universal mounting ring, light insert and separate gearbox for placing in ceiling cavity | reflector mounting ring of diecast aluminium, white, with fastlock mounting system | tool-free three-point clip attachment for ceiling thicknesses a = 2..45mm | light insert of diecast aluminium, white | reflector of aluminium with recessed cover of tempered safety glass | universal mounting ring compatible to all components of the Lunis® SL product family for rapid and tool-free replacing of light inserts | gearbox on back plate |