The outside of my home has numerous air vents to the crawl space. These are covered with a wire mesh/grill to keep out vermin etc. So far, so good.
However, a couple of these vents have some pipes passing through them (a/c line set, condensate drain). And they were not tidily installed. One was packed with steel wool which is now disintegrating.
Question: how can I tidily close up these gaps in the mesh, around the pipes?
If they were running through the walls, I'd use Great Stuff or caulk depending on the size of the gaps to be filled, but I'm pretty sure that's not going to work well here.
I feel there ought to be an obvious right answer but I just can't think of it :-(