External Filament Spool Holder Gridfinity

1x3 Gridfinity holder for the external filament spool. It also has a spot for some screws. The spool holder isn't symmetrical, it has a little spacer on one of the screw holes. The side with the spacer has to face up, it will not fit in the recess. This isn't a big deal to me since I won't be taking it out of its place at all, but if someone requests, I will enlarge the recess to allow both sides to fit. Made using the gridfinity generator on Fusion 360.