Here's the end result:
The assembly is quite straight forward, you just need to drill four holes for the corner pieces in the correct locations on the wall and mount it. The pieces for the horizontal rods are held in place by a small screw that go directly into the vertical rod.
You will need to print the following pieces:
- 4x Piece 1 (2x per horizontal rod)
- 2x Piece 2
- 2x Piece 3
You can download all of the pieces from Thingiverse: Lattice mount pieces.