Tevo Black Widow Cooling Duct

Rear mount cooling duct for the Tevo Black Widow.
No supports or cooling required to print.

Remix with extra width available here: http://www.thingiverse.com/thing:2186235

Additional parts required:
1x 40mm fan
4x M3x12
1x M4x12
1x M4 nut

Compatible with:
http://www.thingiverse.com/thing:1963986
http://www.thingiverse.com/thing:1950504
http://www.thingiverse.com/thing:1937278

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Find the CAD files here in case you would like to modify things.
https://grabcad.