These guys in Mississauga distribute 80/20 profiles (http://www.8020.net/Default.asp) if that is what you are looking for.
It seems to me that I saw some place along the 400 over the weekend that had Extrusions written over the side of quite a large building but I don't recall more than that...
CPI Automation Ltd.
5155 Timberlea Blvd
Mississauga, ON L4W 2S3