The study examines the typological, physical and applicative composition of the solar shading within the evolved scenario of architecture and buildings, with respect to the way in which they function with respect to thermal, light and airborne stresses, determining the elaboration criteria aimed at both “selective” environmental control and “dynamic” interaction and as “environmental filters”: this affirming the protective and reactive capacity of the shielding devices (also with the regulation of functional supports, “passive” or “active”, fixed or variable) to changes in climatic conditions. The development, production and execution of functional devices combined with the window surfaces of the building envelope (for windows and for façade systems) takes on, in the contemporary scenario, the methodologies and procedures related both to the environmental and ergonomic design of interior spaces, and to the energy calibration and containment of consumption due to technical systems. At the same time, the functional devices combined with the glazed surfaces participate in the overall morpho-typological composition of the architecture, according to the application and expression of the “equipment” capable of regulating the incidence of the solar radiation and light conditions.