This chimney cap/damper comes fully assembled. Its base mounts to the sweep's ring (included), which attaches to the flue tile with silicone sealant (included). A 30' stainless steel cable and hardware are included. All Lock-Top II cap/dampers have an overall height of 11 3/8". Features a silicone rubber seal, stainless steel and cast aluminum construction, and a cross-sectional area of 100 square inches.
WARNING: Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.