Therwen 4 Inch Backdraft Damper with Sleeve Airflow HVAC Ducting Volume Damper Galvanized Sheet Metal Round Air Duct Damper Adjustment Handle Airflow Ducting Branch HVAC Air Balancing Easy to Install

Features:

Increased comfort:
By controlling the airflow by a 4 inch duct damper, you can also improve the comfort level within your home or other building, which can provide a more pleasant and comfortable environment for residents, employees, or customers.

Improved airflow control:
The 4 inch backdraft damper helps to regulate the airflow in your system, ensuring that it is distributed evenly throughout your home or commercial building.

Specifications:
Material: galvanized iron
Color: silver
Size: about 3.87 inches/ 9.84 cm and 4 inches/ 10.16 cm in diameter, about 6 inches/ 15.24 cm in height

Package includes:
1 x HVAC duct manual volume damper

Notes:
Manual measurement, please allow slight errors on size.
The color may exist a slight difference due to different screen displays.