Fire Dampers - DFD-100

Model DFD-110 is for use in walls, floors, and partitions with a fire-resistance rating less than three hours. This model has a 2³/₁₆ inch (56 mm) frame. Dynamic-rated-fire dampers are in HVAC systems that remain operational in the event of a fire. Pressure: Up to 4 in. wg (1 kPa) Velocity: Up to 4000 fpm (20.3 m/s) Temperature: Up to 286°F (141°C)