10.2 cm manual volume damper with galvanized sleeve for adjustable airflow and air balancing for HVAC, range hood

[Dimensions Details] The port's outer diameter is approximately 10 cm and its height is approximately 15.5 cm.
Simple Installation: Simply slide the volume damper into the connected pipe and secure it with a pipe clip and adhesive tape.
High-Quality Material: This manual volume damper is made of high-quality galvanized iron. It is high-temperature resistant, not easily deformed, and durable.
[Used for Air Balancing] The side design features a rotating handle, which can adjust the air volume or close the damper. The balanced damper is not completely sealed and is used for air balancing, not for air termination.
Widely Used: Our balanced damper can be used to heat air conditioning systems, air conditioners, and kitchen hoods. You can freely control or turn off the air duct when