Fire damper blades can either be __________ or __________.

Fire damper blades can either be curtain or multi-blade, with each type serving a specific function in fire safety and smoke control within HVAC systems.

Curtain blades are typically designed to hang down and block the path of smoke and flames, effectively acting as a barrier. They are often used in larger openings and are adept at providing an extended coverage area, which is essential for maintaining compartmentalization during a fire.

Multi-blade dampers, on the other hand, consist of multiple individual blades arranged in a frame. This design allows for better airflow management while still fulfilling fire safety requirements. The segmented blade structure increases the effectiveness of sealing against smoke and heat, thereby enhancing overall fire safety within the ductwork.

By understanding the different configurations of fire damper blades, one can appreciate their functional roles in preventing the spread of fire and smoke, thereby contributing to a building's safety infrastructure.