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.
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