A ventilation ducting arrangement includes a flexible conduit having an inner surface defining a channel carrying a flow of air. First connectors are aligned in a length direction along a length of the inner surface of the conduit. Second connectors are aligned along the length direction. Each of the second connectors has a position along the length direction that is the same as a position of a corresponding first connector along the length direction but that is diametrically opposed to the position of the corresponding first connector relative to a circumference of the inner surface. Each of a plurality of fastening devices interconnects a respective one of the first connectors and a respective one of the second connectors such that a distance between the interconnected first connector and the interconnected second connector is limited by a length of the fastening device.