Where can I find this?

I need something to put on the outside of my cage to keep the cat's paws out of it. This won't be an issue once I can move the chin to the other cage, but for the 30 days he needs to be quarantined, it's a problem.



I've looked and I can't find anything, but that's not saying much because I don't know much about these things. Links would be awesome. :]