Has anyone come across this. I need to vent out my wetroom extrator fan that is cieling mounted through the roof. I have a Redland ministonewols vent out tilethat has a 83mm spigot. However the fan I have has a 150mm requirment. There is not a redland one available. So I need to secure something that fits between 150mm spigot to the tile (83mm spigot). The distance between the two is about 1.2 metres only straight up to roof..
Any advice. Sid