Unique Bargains 4 Inch HVAC Duct Damper Manual Volume Backdraft Damper Metal Adjustment Airflow Control Valve for Ventilat
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HVAC duct manual air volume control valve is used to adjust and control the air volume in heating, ventilation, and air conditioning systems. To adjust the air volume in the HVAC system and balance the air flow distribution, thereby improving the energy efficiency of the system to a certain extent.
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smart, traditional (wall), T-shaped, flow: for air extraction 1070 m³/h, width 89.8 cm, smoke sensor
