First I've downloaded the set from SmartBug Wanhao Duplicator 4X Cooling Fan Duct, than I printed the cable holder from pmchealey Wanhao Duplicator 4X Upgrade but didn't please me that well. Finally I was planning on adding the filament filter too but coderdas "Tube Collar Locks Dust Filter Plate" sorry coderdas Colderstone did it. I will print tonight and post picture.
Added a tinkered filament filter cap with small bevel to allow a better grip.
NOTE: Apologise if I forgot to mention your design in my mixin I'm here to build stuff not to claim ownership of some minor mixin send me a message and I'll change that no need to be unpleasant.
My print setup will be
ABS probably black or red
0.2mm layer height
55mm/s travel feedrate
220 C extrude temp
Estimated build time 3 hrs, 11 mins