Modular trimless recessed system ideal to realizing cuts of 138mm or 68mm width in rectilinear, L-shaped, square or rectangular shape to be installed into plasterboard. It consists in pairs of extruded aluminum linear profiles 100x45mm, 90 ° angles and closing heads. In order to allow maximum usability, the profiles are available in predefined lengths, which can be assembled on site in the desired dimensions. Linear sources for direct and indirect lighting and adjustable double-arm LED projectors complete the system. A painted metal cover channel is available as an accessory and is supplied in pre-drilled flat sheets for an easy and quick shaping on site.