8"x13" Lock-Top® Energy-Saving Damper
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8"x13" Lock-Top® Energy-Saving Damper
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Fits Inside Flue Sizes:
6"x9" to 9 1/2"x12 1/2"
Height of Open Lid: 8 1/2"
Cross-sectional Area(sq.in.): 70

These energy-saving chimney dampers are not just replacement dampers for warped, rusted, leaky throat dampers anymore. Even new throat dampers leak because they are only a metal-on-metal seal, which is just not sufficient for keeping warm air from escaping up your chimney at an alarming rate. You can save enough money in the first year or two after you install a Lock-Top energy-saving chimney damper to more than cover the cost of the purchase.
The silicone rubber gasket ensures a tight seal at the top of your chimney
that will reduce your heat loss by up to 90%.


  • Lifetime warranty
  • Silicone rubber gasket seals tight
  • Cast aluminum base with stainless steel lid
  • Comes standard with 30' stainless steel cable; 50' cable and 4' stainless cable shield also available
  • Easy to mount atop any masonry chimney,
    use RS adaptor to mount to prefab chimneys

     not recommend using Lock-Top Dampers on
    fireplaces venting gas logs.
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Information for the Customer

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