Why doesn’t the Energy Top Damper require a chimney fire safety device like the Lock-Top Damper?
The Energy Top relies on a special stainless support springs. As an added safety feature the extra strong lid is constructed of aluminum, which during extreme chimney fire temperatures, would melt before the support springs would fail. This ensures the smoke is able to safely escape through the top of the flue. This assures operation of the damper without regard to a previous installer failing to include a safety device.