Modular system for direct, diffused and/or accent lighting, made of painted or anodised extruded aluminium empty profiles, available in predefined lengths or cut to measure. Available in wall-mounted, ceiling-mounted, suspended, trimless recessed or to be trimless-recessed in external and internal angles. For direct diffused lighting. Body in extruded aluminium. Painted or anodized finish. Complete with Light Proof system side end caps, opal white polycarbonate diffusing screen. and mounting brackets or suspension cables. Available in predefined lengths or cut to measure. To be integrated with linear LED sources . IP40 or 43 degree of protection according to the area where it is installed.