Jeff, Im sorry, I thought I posted where I got the tube.
I bought it from here.
http://lachoppers.com/perf.php
I will go back and add this link to my text.
I had purchased a perforated stainless sheet from the metal recyclers in case I was going to have to "roll my own" I ended up using the sheet for something else.
I think Mcmaster carr has stainless perf sheets.
Good luck on your project!
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