Planning, design, construction and erection of dust air suction plants from a filtering system with localized dust emanation points to a centralized dust filtration system. High-performance centrifugal fans with an optional deadening system. Bags filters with automatic cleaning of filtering elements, by reverse compressed air, providing atmosphere emanations of polluting particles lower than what fixed by Law dispositions or EEC regulations and however not over 2 mg/Nm3 of air. Upon request, the filters could be equipped with a compressed air economizing system that controls the cleaning sequence of the filtering bags upon the difference between the top part and the bottom part pressure of the filtering elements. Collector and connection piping realized with all the devices to reduce to minimum the circuit pressure drop. Executions partially or totally in stainless steel for treatment of polluting and corrosive particles and/or installation in aggressive ambient. Explosion-proof or special executions for air treatment up to an operating temperature of 200 °C.