Fire Dampers - DFD-150

Model DFD-150 is for use in walls, floors, and partitions with fire-resistance ratings less than three hours. This model has a 3¹¹/₁₆ inch (94 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)