This cover takes the Palette 3's bowden tube adapter and adds it to the MK3S+'s FS cover. Just take the locker out of the Palette version and put it in this one. You can print this in any orientation you'd like, but I printed it at an angle to avoid supports. I used Proto Pasta CF HTPLA @ .100mm and it came out great.
The author hasn't provided the model origin yet.