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Lots of diameters and sheet thickness available, spiral tubes and different types of bends and connections are also supplied.
Standard in galvanized steel, painted on request.
Mechanical fastening, edged ends with clamp or by flanges according to EN 12220.
CC series ducts are provided with a leakage class A (bended ducts) or a leakage class C (spiral ducts) according to EN 12237 and they can be supplied with compliance to SMACNA specifications.