I printed all the components using a 0.24mm layer height and 50% infill. To address warping issues at the ends, I added helper disks in PrusaSlicer. The parts barly fit on my printplate with 225x225mm

The spacing between the left and right holes is 247mm.

The screw holes have a 5mm diameter and are designed for countersunk screws with a 10mm head.

There are a total of 6 parts to print, 3 on each side. These parts are assembled using dovetail joints, and the joint tolerances are 0.05mm. If adjustments are needed, I have included the Fusion 360 file.

You need to remove 3 of the Landing feet

This is my first project in Fusion 360, so it may not be perfect. The components are currently quite sturdy, the width of the beams could probably be reduced from 20 to 10mm for a faster print.