Honeycomb wall end pieces are printed with PETG and do not need supports. To avoid issues due to warping, I recommend to print the parts in an enclosure.
2 end pieces + 1 original wall have a width of 544 mm.
The assembled honeycomb wall to a desk is shown at: Honeycomb wall - hook to fix parts (e.g. a NERF) von H3dSprint | Kostenloses STL-Modell herunterladen | Printables.com
The author remixed this model.