The plugs that came with the shelf were little and did not offer much protection against accidentally bumping a leg or an arm.
How do you know if this is for you? If the shell looks like the one in the picture and the bars are half an inch or 12mm apart, then this very likely will fit your shelf.
Or just print and test it. It is just 7 grams.
I used 20% infill 2 perimeters. I used PETG because the color matches, but I don't think the type of plastic will make a big difference.
I went through several prototypes to get the fit to be tight but not too tight. Still, you will want o wiggle it until the tabs go over the first wire.
The author marked this model as their own original creation.