UUDULY 4 Inch Backdraft Damper Two Pack Galvanized Steel Ventilation Duct Airflow Control Insert durable home and garden

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This package includes two backdraft dampers each with a diameter of 4 inch or 100 millimeters to fit standard ventilation ducts and Built for practical everyday use this item supports common household and outdoor tasks with dependable materials
The dampers are constructed from durable galvanized steel with aluminum flap leaves to provide long-lasting performance in ventilation systems and The construction focuses on steady performance during regular handling
Installation is simple by pushing the damper into the ventilation pipe until fully seated with the spring positioned horizontally for optimal flap movement and Setup is intended to be simple for home users so you can unpack align the parts

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The 4 inch backdraft dampers come in a convenient two pack designed to improve airflow control in ventilation systems. Made from galvanized steel with aluminum flaps these dampers resist corrosion and maintain reliable operation over time. They are installed by simply pushing into the ductwork ensuring the spring mechanism is aligned for proper flap movement whether mounted horizontally or vertically. These dampers prevent unwanted backflow of air when ventilation fans are not running which helps maintain indoor air quality and system efficiency. Suitable for use in various applications including air conditioning exhaust fans range hoods heating ducts and vents they fit both flexible and rigid metal ducts but are not compatible with plastic ducts.

This package includes two backdraft dampers each with a diameter of 4 inch or 100 millimeters to fit standard ventilation ducts and Built for practical everyday use this item supports common household and outdoor tasks with dependable materials
The dampers are constructed from durable galvanized steel with aluminum flap leaves to provide long-lasting performance in ventilation systems and The construction focuses on steady performance during regular handling
Installation is simple by pushing the damper into the ventilation pipe until fully seated with the spring positioned horizontally for optimal flap movement and Setup is intended to be simple for home users so you can unpack align the parts
These backdraft dampers help prevent air from flowing backward through ducts when fans are off improving overall ventilation efficiency and Dimensions and weight are chosen to balance portability and stability so the unit can be moved stored
They are compatible with both flexible and rigid metal ducts but are not suitable for plastic duct installations due to size differences and Use this product in bedrooms kitchens garages yards and shared family spaces where organized storage cleaning
Ideal for use in air conditioning exhaust fans range hoods heating ducts vents and other residential commercial or industrial ventilation setups and Each unit is prepared for convenient delivery and ready to support seasonal projects maintenance routines

UUDULY 4 Inch Backdraft Damper Two Pack Galvanized Steel Ventilation Duct Airflow Control Insert durable home and garden

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