Someguy: If you just want to see what's available, go to Google and search "perforated metal" and look at some of the websites.
Then go to your local sheet metal fabricator and see what kind he might have laying around (your job may not be worth placing a minimum order, so it's good to find a shop that does a lot of perf metal jobs.)
Then go to your local sheet metal fabricator and see what kind he might have laying around (your job may not be worth placing a minimum order, so it's good to find a shop that does a lot of perf metal jobs.)