Ultimaker Left Fan Duct

*NEW* VERSION 2 here: Superior in every way.
http://www.thingiverse.com/thing:151061

Inspired by blecheimer's design.
Made to work with Ultimaker revision 3.
11 grams.
used with original fan and extra screws and Hex bolts from Ultimaker.
Recommend tightening down with Hex nuts (see picture)