Thanks, I have enough of my 3/4" stuff that I could send you some too. Only issue is hand snips or shears don't work that well, skill saw with a fine metal blade does however. Looks like 1/4" perforated that you have - perhaps ferrous, or not. I looked at some hex ferrous but they were too narrow to get any felt on them reliably. I couldn't find 1/2 perforated, so decided to take a shot at the absolute biggest holes I could get away with. Still have to finish down a bit to get a nice fit in the cans. If I decide one of the choices (open or custom grills) then I'll put in the fine material to keep out stuff.