The insolated stainless steel duct consists of double wall duct with insolated rock wool between two layer to reduce the temperature and the noise.
It can be built as: Stainless steel – Stainless steel, Galvanized – Stainless steel / Stainless steel – Galvanized.
Jeremias is a German manufacturer, which produces in the Bask Country. It produces 304 stainless ...