Posted 20 Jan 2016 http://www.twmetals.com/catalog.html?cid=tube-aluminum&id=44595-1 It is out there, you just have to special order it. It is not cheap either. Apparently that wasn't on the list of places I'd checked with. I called and emailed close to a dozen suppliers. They all told me they had never heard of that thickness. That price is crazy high though! Stiffeners would for sure be the way to go. 1 person likes this Share this post Link to post Share on other sites