Rear mounted Fan parts and shroud for Unified Prusa i3 Extruder

Rear mounted Fan parts and shroud for Unified Prusa i3 Extruder.

I am using this extruder, but could not find any parts cooling options, so I made my own.

http://www.thingiverse.com/thing:1277720

fits this fan:
https://www.amazon.com/gp/product/B00EL938E6/ref=pe_385040_193769500_pd_te_s_s_ti/183-2672007-1284118

needs:
(2) m3x16mm bolts
(3) m3x30mm bolts
(5) m3 lock nuts