Ventilation chimneys
The chimneys use a ventilation duct made of ABS plastic with a filling (polyurethane foam) with a wall thickness of about 30 mm, depending on the diameter and total height of the chimney.
The base segment of the ventilation duct is 1000mm long. It can be expanded by adding additional meter elements of the ventilation duct, depending on the structure of the roof of the building.