Greenheck FSD Series Combination Fire Smoke Damper

The Greenheck FSD Series is a combination fire and smoke damper engineered to restrict the spread of fire and smoke through HVAC ductwork in commercial and institutional building applications. Available in FSD-211 and FSD-212 configurations to meet specific installation and code requirements.

Designed to meet UL 555 and UL 555S requirements, the FSD Series provides both fire-rated closure and smoke control in a single unit, simplifying installation and code compliance. A robust actuator and blade assembly closes automatically upon detection of fire or smoke, helping protect building occupants and limit property damage in life-safety critical HVAC systems.

Ideal for commercial, institutional, and industrial buildings requiring UL-listed combination fire and smoke damper protection in HVAC duct penetrations through rated walls and floors.