Air ducts are made of galvanized sheet steel and are used in buildings to supply and remove air. There are no standard di- mensions and elements are often produ- ced incorrectly. The decisive factor is that air ducts, after their programmed functional cycle, can be used excellently for many other functions, both indoors and outdoors.
You can find them at any building site, and it’s really easy to ask a factory to make bespoke ones… and turn that factory into a furniture shop.
