This is a small cover designed to cover the terminals of the LRS-100 power supply to prevent contact with fingers and tools when in use. (Confirmed on an LRS-100-5, but likely works with others as well.) This has been remixed so that the left side (when looking at the power supply's terminals) is now a snap in and no longer requires a screw to be installed under the power supply, allowing for a flush mounting surface on the bottom. The right side will require an M3x6mm machine thread screw to secure properly.
The author remixed this model. Imported from Thingiverse.