The fan cover can be mounted on the wall or directly on a pipe with a diameter of 100 mm. Printed in PLA, nozzle 0.4, layer 0.2, padding 15%, perimeter 3, supports no, collar no. The pipe flange is 100 mm, it can be difficult to fit, the solution is to reduce the model in the slicer. It suited me like this for a flexi hose.
The author marked this model as their own original creation.