Ventilation elbows made of galvanized sheet metal with a diameter of fi 315 angle 30st for dust extraction systems, connected by wide clamping bands, found in our auctions. It is a ventilation element used in systems for the extraction of dust and other air pollutants. It consists of segments joined together.It is a ventilation element used in systems for the extraction of dust and other air pollutants. It consists of segments connected to each other.Technical data:name: segmented elbowbrand: KOBYLASmaterial: galvanized steeldiameter fi: 315mmangle: 30stquantity sold: 1pcsteel thickness: 0.7mm.