3100 Series Damper - 30" x 30"

$175.95/EA
Item Number: 113903 Availability: Usually ships in 24 hours 
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.
• 113906 and 113907 have a maximum airflow 2,400 FPM.
• Motors have a cable pulley, so no delay timer is needed for fan.
• 113907 requires two motors (115224).