The author remixed this model.
Didn't like they way the Panels looked with the 24 Walls so I modified them. They now consist of 2 parts: The middle a a border part. You can set the settings of the middle part with 1 Wall, 0 Top and Bottom Shells, 10% Honeycomb infill and set sparse infill direction to 0 (I think that gives it a cleaner look). And you can print the border with your usual printer settings. It also saves about 40g of filament in my case.