Package Content: Package includes 8 pack garage door vent kit for your daily needs or share it for your neighbor and friends to use. It is compatible with 4 inch ducts, ventilation fans, exhaust fans, inline duct fans and more. Screened and Sloped Design: Cididu exhaust vent feature a built-in screen to keep out unwanted debris and a sloped design to keep rain out. Allowing you to enjoy fresh air into your home and ensuring a higher quality of life. High Quality Material: Our soffit vents are made of high quality ABS material to ensure durability and sturdiness. The exhaust vents have removable panels and mesh screen covers that are easy to clean and maintain, ensuring optimal ventilation performance and longevity. Easy to Install: The vents are extremely lightweight and the installation process is simple and effortless. The black fins can be bent to secure the vent inside the duct and prevent it from falling off. The flange had drilled holes to bolt it in place. It offers the flexibility to choose between wall-mounted or ceiling-mounted installation to give your space optimal airflow. Suitable for Various Situations: The vent is suitable for ventilation in kitchen, bathroom, offices, factory, garage door and other indoor and outdoor places that need to be exhausted. Provide you with efficient ventilation solutions to create a comfortable space. Cididu round air vent covers are compatible with 4 inch ducts, ventilation fans, exhaust fans, inline duct fans and more. Louver grille covers feature a built-in screen to keep out unwanted debris and a sloped design to keep rain out. Allowing you to enjoy fresh air into your home and ensuring a higher quality of life. It is suitable for ventilation in kitchens, bathrooms, offices, factories, and other places that require exhaust. Provide you with efficient ventilation solutions to create a comfortable space.