Abstract: A smoke chamber for a fireplace comprising both inclined (23, 24, 27, 28) and vertical (21, 22, 25, 26) supporting elements, each element having abutment surfaces (51) and supporting surfaces (34, 44) of such shape that a significant part of the load on the inclined elements is converted into a substantially vertical load on the vertical elements. The element built smoke chamber mounted on a burning chamber is immediately upon positioning capable of supporting a heavy brick chimney.