Blank wing for modular rack mount (https://www.printables.com/model/79585-low-profile-modular-1u-relay-rack-mount-for-16-key). Can be used instead of empty patch panel or as a base for creating new panels. Available in two height - 1RU and low profile. Provided files are for left side panel, but can be flipped for right side mounting
The author remixed this model.
Changed patch panel into a blank panel