The terminal units of the UFA series have the dual function of filtering the air with high efficiency absolute filters and distributing the air throughout the premises. It consists of a plenum box made from polystyrene with a circular intake on the side. It can be equipped with swirl diffusers or perforated face diffusers for laminar air flow. It is equipped with a pressure intake that controls pressure losses in the filter. UFA units are suitable for installations that require very pure, germ-free air such as clean rooms and pharmaceutical laboratories.