MULTIPURPOSE The One-Way Airflow ducting damper is designed to be mounted between two ducts to prevent backdraft when the fan stops.It's an excellent choice for various HVAC systems, such as range hoods, bathroom exhaust fans, kitchen ventilation, air conditioning systems, heating ducts and vents, etc.WHAT YOU GETThe package comes with 2 Pcs Silver Tone HVAC Backdraft Damper with a 5-inch(124mm) outer diameter of interface and 2.3-inch(58mm) overall length.RELIABLE MATERIAL This Backdraft Damper, constructed with a galvanized steel body, aluminum damper blades,and stainless steel spring, precisely manufactured, with great durability and stability. It can quickly respond to change airflow direction, ensuring one-way airflow in the air duct system.
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