Hi All - I would like to duct the ceiling fans in our 2 bathrooms and our laundry so they vent to the open air through the roof tiles (at the moment they vent into the roof cavity). I havent done this before so am embarking on a new project for me. Any advice in these three areas would be a huge help - 1) I am not sure what to fit over the roof opening in our roof tiles. Does anyone have any recommendations? ( & where I would to buy this?) 2) One bathroom and laundry are next...

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