The ultimate replacement for warped, worn out, or defective factory built fireplaces. Installation is simple and damper is recessed approximately 6 inches below and inside the top of flue ideal for restoration projects where an exposed damper is unwanted. The existing or new rain cover can be installed without fear of a freezing or sticking damper. Features Material Heavy Stainless Steel. Class solid pack. For use in most prefab, class A, round terra cotta and stainless steel chimneys. Easy to Open and Close from inside the firebox. Prevents Heat and Air Conditioning loss. Prefab fireplace. Single Wall round. Specifications Overall Dimensions 9 L x 9 W . Installs approx. 6 below. Note We do not accept buyer's remorse returns on these products. Please make sure it works for your needs before ordering. Stainless Steel Copper chimney caps have a Lifetime Warranty.