(57) An air duct for transport or distribution or suction of air, the duct having walls
(2) made of a woven or non woven fabric or foil, wherein the duct comprises
- wall (2) of the duct, which has a cross section of a triangular or rectangular shape,
- at least one upper longitudinal bearing profile (1), in which an upper corner (4)
of the duct is embedded, and
- at least one lower longitudinal delimiting profile (3) for setting a position of
a lower corner (5) of the duct, and
at least one further profile (1, 3), in which a further corner (4, 5) of the duct
is embedded, and which is adjustable in a fixed position in respect of the upper bearing
profile (1) and / or the lower delimiting profile (3).
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