Intumescent Circular Fire Block Damper Diameter:250mm maintaining efficient airflow and protecting

maintaining efficient airflow and protecting wall surfaces from damage

3-speed operation

Provides thermal and acoustic insulation

Rimmed design for use in hollow materials

Includes a mounting bracket

Intumescent Circular Fire Block Damper Diameter:250mm maintaining efficient airflow and protectingPrevents the spread of fire through ducts or apertures in fire resisting elements such as partitions and doors Provides up to 120 minutes of fire protection Slats swell, fusing together to form a non combustible mass, preventing the passage of hot smoke and gases Slimline construction, low maintenance and easy to fit Bi directional air flow