I want to put my chimney hood outside exhaust, but the hole of diameter 150 mm that I have to realize in the ceiling, which consists of plate BA13 meets the plate fixing rail. I do not wish to evacuate by a wall but only in the attic connected to a roof tile. How to pass the obstacle of the rail?
I warn you about the compliance of your flue. A diameter of 150 mm is only suitable for a closed hearth, never operating open window. For the passage in the ceiling in BA13, a very precise device is to be put in place.
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