duogas

Chimney flues and metal roof outlets; ducts of metal for ventilating and air conditioning facilities; metal conduits for smoke extraction; ducts of metal for central heating installations; chimney cowls and pots of metal; chimney shafts of metal; reinforcements for metal chimney flues; grilles of metal; metal pipe couplings; metal covers for chimney flues; clamp rings of metal for chimney flues. Apparatus for heating, ventilation and steam generation; ventilation grates and inlets; extractors for ventilation apparatus. Chimney flues and roof outlets, neither of metal nor of plastic; ducts, neither of metal nor of plastic, for ventilation and air conditioning installations; ducts, neither of metal nor of plastic for removing smoke; ducts, neither of metal nor of plastic for central heating installations; caps and gyrating cowls for chimneys, neither of metal nor of plastic; chimney shafts, neither of metal nor of plastic; reinforcements for chimney flues, neither of metal nor of plastic; grilles not of metal; clamp rings for chimney flues not of metal.