CR10 3 in 1 Windowed Extruder Cover and SlottedFilament Guide
Free     Printables     Modisch Fabrications

CR-10 3 in 1 Windowed Extruder Cover and Slotted-Filament Guide

Rotated the original file to make it lay flat on the build plate Nothing else changed not tested yet ...

similar models —

CR-10 3 in 1 Windowed Extruder Cover and Slotted-Filament Guide alternatives
Filament guide
GerryPB
Maze Container
NETservis