We are a famous manufacturer, exporter, supplier and trader of widely acclaimed Semi Rigid Spiral Duct. It is a machine formed duct, which is made in a continuous spiral using aluminum strips, creating an airtight tube. This can easily be cut to length by hand to conform to a required duct route, without altering its full circular cross section. Due to its flawless features our offered Semi Rigid Spiral Duct is massively in demand.