This is a replacement corner wall piece for a DELACK enclosure skirt which adds a small cutout for routing accessory cables. In my case I wanted to route a webcam cable at the front lower corner of the enclosure skirt.
I printed mine in PETG, 0.2mm, and 25% infill with paint on supports just in case for the cutout but probably not strictly necessary.
The author remixed this model.
This is a remix of the skirt corner wall to include a cutout similar to the original skirt back wall.