I needed a corner bracket to mount an ERCF to the side of my Voron 2.4

2020 Corner Bracket with built in spacer for mounting 2020 extrusions to the back or side of a Voron with enclosure panels

2 versions for panel widths of 3mm or 4mm

I printed in ABS using recommended Voron print settings (5 top/bottom layers, 4 perimeters, 40% infill) and I've had no problems with them.