Original Ultimaker 2+ Fan shroud

Another update 08-08-2016. Someone of Ultimaker hinted me on this model: https://www.youmagine.com/designs/um2-dual-fan-shroud . The airflow of this design has been proven bij computer simulation. The original UM2+ fanshroud design is made to be folded with steel sheeting. The model on this youmagine link is heaps better for 3D printing.

Update 03-08-2016: Use the _fatter.stl file, the original model is made for steel sheeting, which is so thin that it doesn't work for 3D printing. The _fatte