About this 3D model

I basically boolean'd this: http://www.thingiverse.com/thing:30721 and this: http://www.thingiverse.com/thing:20830 to make a Prusa it.2 compatible fan holder, with long "trumpet". I didn't find any adapter specifically made for it.2, with the long "trumpet". the long "trumpet" is exactly the same as /thing:30721 It uses a 4mm fan.