(57) Chimney, comprising a transport shaft (3) for waste gases which can be mounted protruding
through a roof and which can be connected to an end shaft (1), mountable on top of
the roof, being in communication with the open air at its top end, in which furthermore
the diameter of the end shaft is larger than the diameter of the transport shaft,
and comprising means with which the end shaft can be secured in such a way that the
end shaft with its bottom end extends to a lower level than the top end of the transport
shaft, so that the transport shaft protrudes into the end shaft.
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