The stainless steel non-return valve for kitchen and bathroom exhaust ducts is an essential component for maintaining a clean environment. This product effectively prevents backflow of air , ensuring that your kitchen and bathroom remain fresh. It is easy to install and fits seamlessly into your existing ductwork, providing a reliable solution for managing airflow. Features - Color: Silver -Material:Stainless Steel - Size: 19.00X19.00X4.50cm/7.47X7.47X1.77in - Size: 15.00X15.00X4.50cm/5.89X5.89X1.77in -Versatile application: suitable for dryers, extractors, range hoods, and other hvac applications, ensuring broad usability across various systems -Check valve: features a check valve design that effectively prevents backflow of smoke , maintaining a clean environment -Easy installation: designed for simple installation, making it ideal for use in both kitchen and bathroom range hoods without the need for help -Silent operation: engineered for quiet performance, ensuring no noise disturbance during operation, providing a peaceful home environment -Adjustable valve: equipped with an adjustable valve to accommodate different airflow requirements, offering flexibility and optimal list: 1pcs valve