Dampers Save Energy
When you shut a damper you want to keep the warm air in your home from escaping up the flue. The throat damper in most masonry chimneys does a poor job of this with its metal on metal seal. Lock-Top dampers seal tight with a silicone rubber gasket that is 90% more effective than a new throat damper.

Do you know energy dollars are escaping out of your chimney? See why most dampers perform poorly and cost you money.
Traditional dampers are located in the “throat” of a fireplace. They are made of cast-iron and are housed in a low-tech frame work. These cast-iron dampers do not seal well – they have a leaky, rough, metal-to-metal seal.
Recent lab studies have shown that even a new throat damper can leak up to $200 of a heating and cooling a year. Imagine how much energy an old, rusted out damper leaks!
The Lock-Top Seals heat in like a thermos lid. The Lyemance shuts the door on energy loss. The Lock Top II offers the screen around the damper as an added bonus. The High efficiency dampers seal tightly to save you money.
• High efficiency dampers have a rubber gasket seals tightly like a storm door for your fireplace, and they keep heating and cooling dollars where they should be… In your wallet.
• These Dampers mount on top of your chimney to keep out animals and rain.
• These Dampers easily operate from inside your firebox and they seal tight every time you close it, eliminating any draft.