100mm/4" flexi ventilation ducting (Forest Fields NG7)

Hi, would anyone have any unused or surplus flexible ventilation ducting please,
Ideally Diameter of 100mm / 4 inches.
Its like what is used on a tumble dryer or shower extractor fan or cooker hood.
Any type, Aluminium or PVC and any colour.
Any pieces or lengths appreciated, I need about 5 metres in total, but I can stick bits together to get the length I need.
Thanks In Advance
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