Chimney cap acid-resistant fireman gr. 0.6 mm with base made of 1.4404 sheet metal. The main application is to support the gravitational chimney draft by creating a negative pressure at the outlet when the wind blows over the base and preventing back draft. It always faces the wind, thus covering the chimney opening. The fireman can be used for both chimneys in ventilation and flue gas. Firefighter with a bearing occurs in diameters from fi 150 to fi 300 mm. It is also possible to produce other diameters on special customer orders.