Hi ya Nero
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Welcome to RiU
It's not that difficult to work out man
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... Just wrap a bungee round it ... and then hook a bungee to your rafter .. and connect the two together ... or add another bungee to conect them together
No real right or wrong way to do it as long as it secure and not to much bounce ... Test the fan when its mounted to make sure it dont move to much when you turn it on ... it will rip your ducting if it has to much movment
Have fun ... and post us some pics
