An external filament feed cover for the Monoprice Voxel / Flashforge Adventurer 3 with a Bowden Tube adapter. Cut a hole in the door using a heated knife, place the printed part and seal with a glue gun.
The model’s bottom left position from the top and left sides of the door is 123mm, 13mm respectively. I've printed several versions using trial and error for the ideal position, and ended up with a much taller cut than necessary. You can reduce the height of the part and cut a smaller hole.