In the archive there are 117 objects of the ventilation system beginning from the pipes and ending with the fans and ventilation grilles. With the help of these objects it is possible to build the necessary ventilation system.
All models are named according to the product catalog.

For the corrugation model in order to bend it in the desired direction it is necessary to apply the PathDeform modifier this will allow to bend the corrugation along the spline. Draw a suitable spline and specify it in the modifier.

http://era.trade/eng/catalog/era 

The archive also contains the CoronaRenderer and V-ray materials library the .fbx and .obj files