Round air duct Spiro f400

Round spirally wound air duct with a diameter from f80 to f1400 is made of galvanized sheet metal and has a standard length of 3 m. There is a transverse finning to eliminate the vibrations created by the passage of air flow. Spiral air ducts are preferred in the construction of ventilation systems because of the lower resistance they have than standard rectangular air ducts. They are very suitable for outdoor installation as they look aesthetically better. Whether it is shops, halls or restaurants, they are the preferred choice in most cases.