This damper is perfect when no visible damper is wanted on top of the chimney, such as historic restorations. It is ideal for any round air-cooled or solid pack factory-built chimney, round clay flue, or round chimney liner. This damper can be installed below RSHT Enervex Chimney Fans for woodburning without interfering with fan operation.
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.