This may seem real basic but I am bit stumped with my install. I have purchased the Metalbestos through wall kit from Selkirk. Everything seems easy enough when creating the opening, installing the thimble, the wall bracket outside, the insulated T... This is where I get stumped. It would seem to me you'd want the same class A chimney pipe running through the wall and thimble and connecting to the insulated T and not coming out into the room as to be seen since it's SS and not black. Being that my wall is less than 6 inches I don't get how to make the connection from the insulated T through the thimble. My question is: What type of pipe to do I run from the T through the wall thimble and connect to the black stove pipe in the house? Thanks for any help!