Our selection of Stainless Steel and custom Copper Chimney Caps are manufactured by Reliance Manufacturing. They are designed to fit the tops of various sized clay flue liners. The Stainless Steel sizes are stocked at CBCP from 9”X 9” to 17”X 17”. The outer frame of these caps fit over the outside edge of the flue liner and can be adjusted to fit tightly with SS bolts.