DIN V 18160-1 Bb.2:2006 Chimneys - Part 1: Design and performance; National supplement for the use of clay/ceramik flue liners according DIN EN 1457, allocation of the classification system for custom built chimneys
2006DIN V 18160-1 Bb.2:2006 Chimneys - Part 1: Design and performance; National supplement for the use of clay/ceramik flue liners according DIN EN 1457, allocation of the classification system for custom built chimneys