Aluminum flexible hose ø 70 mm + two clips 60 mm-80 mm air drain flexible alloy pipe 5907783060984 | eBay
H&C VENT Flexible aluminum pipe, diameter 4 Inch 100 mm, pipe diameter, HVAC 1.5 m, maximum length, air duct, ventilation flex hose, exhaust air outlet, hot air supply system element : Amazon.co.uk: