A volume damper is an HVAC system component used to control the flow of air in an air duct. It is made of a metal plate that is installed in the duct, and it’s controlled using a handle or rod that can be adjusted to either open or close the damper. When the plate is open, air is allowed to flow through the duct. When the plate is closed, air is prevented from moving through the duct. Volume dampers are used for several purposes in HVAC systems, such as balancing air pressure, controlling airflow in a specific room or area, and helping to maintain system efficiency. The size of the volume damper is determined by the size of the duct and the amount of air that needs to be managed. Generally, larger volume dampers are used for larger ducts, while smaller ones are used for smaller ducts. Dampers that are too large or too small can cause issues such as noise, vibration, or inadequate air flow. It