I’m moving all my network equipment to a central location inside a closet. I will mount the switch on the wall, and have about 14 Cat6 cables passing through the interior wall and going in different directions. What's the best way to do this? I have seen passthrough wall plates like this, but I don't like that they allow airflow and a potential entry for mice or other critters. enter image description here

I have also seen recessed boxes like this with a punchdown patch bay, but this doesn't actually get the wires into the closet. enter image description here

For smaller installations like in each room, I would use keystone plates like this. So I could mount four of these right next to each other. Is that the best approach?

enter image description here

  • Two basic grommets with PVC between is the usual approach. There are some pre-made. Think hotel door peephole.
    – isherwood
    Mar 15, 2021 at 17:19
  • Do you have a photo? I’m not sure how this would make a seal to keep hot attic air out
    – Elliott B
    Mar 15, 2021 at 17:22
  • I'm not sure how that would get past your wall plates in the first place, but here you go.
    – isherwood
    Mar 15, 2021 at 17:24
  • Oh I see. That looks good for going from one room to another, but I need to go from a conditioned room to unconditioned space
    – Elliott B
    Mar 15, 2021 at 17:25
  • Look for pass through devices to allow a cable to come through, but are small enough to block rodents and act as a firestop, which I feel is an important feature.
    – gwally
    Mar 15, 2021 at 19:31

2 Answers 2


There exists a putty called "duct seal compound" which you can pack into the opening of a pass-through plate to seal the opening. I couldn't say whether it is rodent-resistant (few things are) but it may get the job done for you.


Keystone jacks come up to 6 ports on a single-gang plate (you show 4s) so three of those would do the job. You can also get a 12-port model for a double-gang box (or boxless low-voltage trim ring, which simplifies the wire-handling behind the plate.)

6 port surface-mount boxes are also common.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.