Effortlessly control airflow with durable 3100 Series Dampers.
- Aluminum back draft dampers are engineered for strength and durability.
- Flanged mount frame.
- Blades are sealed with full-length, vinyl weather stripping.
- A profile of 1-1/8" allows dampers to fit in just about any wall.
- Motors have a cable pulley, so no delay timer is needed for fan. Motors are sold separately.