3 meters, however forced flue models do not have any restriction.
https://butaneindustrial.com/wp-content/uploads/2021/07/Butane.png00adminhttps://butaneindustrial.com/wp-content/uploads/2021/07/Butane.pngadmin2014-07-05 11:24:352014-07-05 11:24:35What is the minimum chimney pipe height?
