The C-RPVC supply and exhaust grille with mesh is intended for decorative function – the standardized design of the grille allows it to be easily integrated into the overall appearance of a building or structure. The grille is used for supply and exhaust ventilation in round duct systems. This grille distributes the external and exhaust air fl ows, eliminating the possibility of mixing them. The supply and exhaust grille with a mesh protects the air ducts from precipitation and foreign objects.