This is a make for the popular IKEA ivar cupboard floor protection. There seems to either be a shortage of those or they are going out of production, I could not find them on the Ikea website any more. So I made my own.
I added a screw hole to it, to it can be fixed with a 4/5mm screw into the beam.
The “shoe" fit snug and solves two problems.
The author marked this model as their own original creation.