I was wondering if anybody knew what brand of vent pipe might be used on my double wide. The maker of the double wide is Cavalier and is a 2005 model. The fire place has the name plate of Desa. The vent pipe is 8" stainless steel noninsulated double wall. The outer pipe is galvanized. The SS inner pipe is held in the middle with some wire triangle clips that fit around the inner pipe with the corners (of the triangle) holding against the inside of the outer pipe. I need to get about 6 feet of this stuff and have no idea where to find it.