The bracket moves the filament run out sensor, down 20mm, forward 20mm, and tilts it towards the filament roll.
This reducing the friction the filament runout sensor adds because the original orientation has the filament enter at too much of an angle. The new location will not reduce the avaible Z printing area.
No additional hardware needed. Uses the original screws and bolts, and slides into the 20x20 extrusion.
This model is for the left filament runout sensor, mirror it in your slicer for the right side.
The author hasn't provided the model origin yet.