this post was submitted on 07 Jun 2024
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You would want something like this. The important part is that it comes in two pieces so you can install it without having to disconnect anything to pass it through. The brushes are to resist airflow, but they are obviously not going to be airtight or pest resistant. For that, I would use expanding foam insulation. Those cables and pipes aren't going anywhere, and if you absolutely had to replace one, removing the sprayfoam is a trivial effort compared to the rest of the job.
Split brushed plate for cable passthrough
This feels like the best answer. Those are your air conditioner lines. You probably don't want to seal them in with spray foam.
Your best way to keep pests out is to track those lines from your A/C unit outside to where they enter your house. Seal that up with the pest resistant foam if there is any daylight.
Shove some rockwool insulation into the hole. You can finish with steel wool too for added pest protection. Then put the cable cover up to make it look pretty.