Filament guide with inbuilt print-in-place filament filter+oiler : r/elegooneptune2
STL file Filament Filter・3D print design to download・Cults
3D Printable Universal 3D Printer Filament Filter by CreativeTools.se
3D Printer Cleaning Filament Dryer 1.75mm Storage ,HolasDoDo(3 PCS) Rubber Filament for 3D Printer,pc Filament splicer Tool 1.75 for PLA/ABS or Other Printing Filaments(Grey): Amazon.com: Industrial & Scientific
Filament Dust Filter Helps Keep Your Print Quality High | Hackaday