Lightweight, double ply PVC wall, encapsulating a spring steel wire helix. Extremely flexible, can be used where tight curves are required. Blockages can be easily seen, enhancing the systems performance. Clockwise spiral. Made in Germany. Key Features Lightweight, double ply PVC wall, encapsulating a spring steel wire helix Extremely flexible, can be used where tight curves are required Blockages can be easily seen, enhancing the systems performance Clockwise spiral
