minimal J-head bracket bowden extruder

I have modified this design
http://www.thingiverse.com/thing:26817
I love the mini-size j-head bracket, but I wanted to use a bigger fan to coll down both the hotend and the printed pieces.
For this purpose I used this fanduct for 40mm fan http://www.thingiverse.com/thing:389013
it work nice and fine :D

Tested with a J-head for 3mm filament with my big coreXY.
The original design is for the Prusa i3 :)
The single j-head mount has hole for the standard prusa i3 single plate carriag