Raise 3D N2 3 fan duct

I remixed the Raise3D N2 - Active Air Duct v4 by firesped for 2 reasons. FIrst several of the files were broken when attempting to slice them in simplify3d. Secondly, the back fan part was too close to the thermisters to attach correctly on my printer. So I measured and re-modeled the entire extruder setup on my printers and used Firesped's main concept to rebuild it from the ground up in Fusion 360 with necessary clearance and recessed slots for the nuts.

For the bolts I used 3mm x 20mm long