Built this for my personal use to keep cables I run in the chase way in my house from getting scraped up. It has a good friction fit so it won't pull off if you pull against it the wrong way. If you want it to be completely permanent, put a bit of caulk in the groove before you press it on. Printed in PETg. No guarantee this is to code or suitable for your purpose.
The author hasn't provided the model origin yet.