Construction with 3 assembled extruded aluminium profiles which can be combined to offer different lighting configurations. Rounded shape upper profile specially designed to house 2 parallel lamps for indirect light. Construded with three assembled extruded aluminium profiles which can be combined to offer different lighting configurations. The rounded shape upper profile houses 2 parallel lamps for indirect light; the lower profile is specially designed for electrical mechanisms and direct light and the middle profile is suitable for medical gases installation. Internal access to the unit is performed through clipped covers, which allows easy access and the possibiity to expand or reduce unit equipment easily.