120mm Fan to 90mm Pipe Adaptor

This is a fan adapter for mounting a 120mm PC fan to a standard 90mm drain pipe. I've used this in a DIY dashboard setup for my Sim Racing setup and was used to channel Airflow like a real car whilst racing.

Checkout my work here - http://oznzsimracing.com/forums/m/16887284/viewthread/29285694-3d-modellingprinting-sketchup-fusion360

and here -

http://oznzsimracing.com/forums/page/16/m/16887284/viewthread/23526371-ramjetx-simrig-other-stuff