Shelf Support / Bracket Mk2 (Larger)

A much larger version of the wonderful shelf support from condruttoma. I have also created Left Handed (LH) and Right Handed (RH) versions, whereby the underside screw flanges protrude from different sides. Also these versions the back plate is "keyed" so it only fits in one-way. This is because I repositioned the mounting screws, and they're no longer equidistant to the ends.

The original has an on-wall height of 90mm, these ones are 140mm.
The original has a distance out from the wall of 110mm, these ones are 170mm.

I printed on a Bambu P1S with generic PLA. You can print the main support standing up with the dovetail slot facing upwards, without any support required, but I got best results printing it lying down and with support. That's if you're OK removing quite a bit of support material this causes the slicer to generate.
I used 4 walls, with 25% infill, for a bit more strength.

I completely re-created these from zero using Fusion 360.