No idea what the story behind this is. It’s a single gang coax box, and just a hole next to it. Looks like previous owner started to patch the drywall by putting the backer in but gave up.

  • AwkwardLookMonkeyPuppet
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    3 days ago

    Yes, it definitely takes some experience. If he goes that route then he should practice on a piece of cardboard first. He gave me some more details in another reply, and 2 gang definitely seems like the easiest solution, and it opens up some future options.