Hi guys, first time posting here and have a question. I have a wood stove in my basement. It used to go right through the wall to a brick chimney. The brick chimney was taken down a few years ago and I want to put up a stainless steel chimney in its place. The interior pipe stove is all intact going to the base of the old chimney. The base sits about 6" high and it is 21"x16" with the opening in it being 14"x9". I was looking for some type of base plate that would be attached to the masonry base and the pipe could attach to that? I saw an achor plate by metalbestos that looked like what I wanted but it said it could only support 7' of pipe and I need 24'. Any info would be greatly appreciated.