Top Sealing Damper Caps are those where the damper serves as both a cap and a damper. It is installed at the top of the chimney flue and is operated by means of a cable which extends from the damper cap to a bracket in the fireplace. It is a spring-loaded system that can be adjusted pursuant to the opening you want to achieve. Their great virtue is both their airtight performance and unlike a traditional damper, they can be installed without a firebox rebuild.
Since choosing a proper chimney cap is daunting and involves reflection upon the use of the chimney and a careful measurement to insure a proper fit, call Full Service Chimney, Kansas City’s Premier Chimney Sweep, for advice and professional installation of the cap that’s best suited for your chimney.