Features Back Prevention: Features a built-in backdraft damper to ensure stable air and prevent any leakage, providing reliable and efficient ventilation for your space. Fit: Compatible with 6in flexible or plastic pipes used in dryers, exhaust fans, and more, ensuring a and secure connection for optimal performance. Single-Way : Automatically switches to allow only one-way air, while also providing damping to regulate air effectively. Construction: Constructed with premium ABS material and a sturdy structure, ensuring long-lasting durability and reliability. Easy Installation: Designed to be lightweight and compact, allowing for quick and hassle- installation within minutes. Features: 1、Backdraft Damper: A duct connector which is equipped with back damper device to ensure stable air without leakage. 2、 Matching: Suits ly for 6in flexible or plastic pipe on dryer, exhaust fan, and so on, useful and reliable. 3、Single Way s: Allows for automatically switching, this return blocker only allows for 1 way as well as damping. 4、Premium Material: The application of premium ABS material and sturdy structure bring excellent durability for long use. 5、Easy to Install: Designed to have a light weight and a compact size, the installation can be quickly completed in minutes. Specification: Item Type: Backdraft Damper Product Size: 6 in Material: ABS Drive Mode: Automatic Switching s Direction: One Way Package List: 1 x Backdraft Damper Package List 1 x Backdraft Damper