Chimney stove surround steel power type ambient air dependent heating power 7 kw efficiency 78 maximum room size 201 m flue connection top flue connection diameter 120 mm energy sources wood firewood design 1 multiple flue connections safety feature self closing door combustion chambers ironker cast iron features post combustion airwash certified 2 bimschv height 89 cm width 404 cm depth 40 cm weight 87 kg