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Chimney Damper Sealing Kit

The Damper Sealing Kit is designed to seal off your damper around your stainless steel liner when installing a fireplace insert or a freestanding stove.

$109.99

The Damper Sealing Kit is designed to seal off your damper around your stainless steel chimney liner kit when installing a fireplace insert or a freestanding stove. It is very common to have to ovalize a short section of the liner in order to pass the liner through the throat damper. The Damper Sealing Kit can effectively seal around 6" thru 10" round liners that are ovalized to the minor dimension of 4". The Damper Sealing Kit will also work with 4" round liners.

Includes two galvanized metal sections which adjust to fit around the chimney liner. Also includes insulation and all hardware required to complete the job. Seals off dampers up to 48 inches wide. Flex connector/chimney liner not included. Click here for damper sealing kit instructions.

When you have a large opening around the liner, it allows the hot air, created by the insert or stove to rise up into the chimney up into the chimney chamber, which reduces the amount of heat that is intended for heating the house.
Sealing off the damper can help the efficiency of the stove and also provide more heat in the living space. When installing a wood stove insert, sealing off the damper will provide more heat around the firebox making sure the fire is hot. The hotter the fire is in the firebox, the less amount of creosote will go up the chimney, and the longer the wood will burn. If you plan to install a freestanding stove in front of a fireplace, sealing the damper will provide more heat in the living space, preventing excess heat up the existing chimney. 

If you are removing your fireplace damper and have questions, check out our helpful article on what to expect.

Another great option is to use our smaller insulation blankets. These sections of insulated blankets can be cut, shaped and placed with the Sealing Kit or by themselves into the openings to prevent the loss of hot air, and increase the efficiency of your appliance. See our insulation page for insulation blanket only, pre-cut lengths.

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