1. Round fire dampers install into HVAC ducts and feature a fusible link that triggers above a specific temperature and closes shut using spring-loaded blades or gates. These dampers eliminate the spread of fire through the HVAC systems.

2. Product Size:8 in Duct, 14 in L, Galvanized Steel Frame, Galvanized Steel Blade, Spring.

3. The main function of a fire damper is to maintain compartmentalization in a building, which is necessary to limit the spread of fire and provide occupants with safe egress routes.

4. Fire dampers are typically installed in ductwork, ventilation openings, or fire-rated walls and floors.

5.A fire damper is a crucial safety component in a building's HVAC system that helps prevent the spread of fire and smoke through ventilation systems and ductwork. It is specifically designed to close automatically in the event of a fire, sealing off the passage of smoke and flames.