Wanhao Duplicator 4X Cooling Fan Duct

I tried several existing models but none of them really fitted to my printer so I decided to design a new one.
This is a mix of good ideas I found on other designs.
http://www.thingiverse.com/thing:259688, http://www.thingiverse.com/thing:221306 and some of my own adapted to better fit to Wanhao Duplicator 4X
You can adjust the height to really fit to your nozzle height.
Don't forget to break the small supporting part on the front.
Feel free to improve :-).
-- UPDATE 11/5/2014