If you're at all
worried about EMI, it might be reassuring to put some ferrous metal screen,
the sort used to repair, or scavenged from, OLD screen doors, not the new
ones, over the PSU's larger openings.
Does the metal screen material you can buy at Home Depot or the likes
work? I think it is made of Aluminum, but I've never really checked (as I
find the nylon screen easier to work with, so that is what I have always
bought when rescreening windows or doors)
-chris
<http://www.mythtech.net>