This range hood outlet check valve is designed to prevent backflow and ensure efficient ventilation in your kitchen. Made from durable materials, it fits seamlessly into your existing ductwork. The valve's sleek design complements any kitchen decor while providing a reliable choice to keep unwanted smoke from re-entering your home. Features - Color: White -Material:ABS - Size: 21.00X20.00X8.60cm/8.25X7.86X3.38in -Efficient smoke prevention: the range hood outlet check valve and duct base nonreturn valve effectively prevent smoke backflow, keeping your kitchen air fresh -Durable and reliable: made from sturdy materials, these components are heat and fade resistant, ensuring performance -Easy installation: designed for easy installation, these accessories can be set up without help, saving you time and effort -Wide compatibility: suitable for various range hood models, these parts can be widely used in home kitchens, restaurants, and more -Enhanced kitchen environment: effectively reduces smoke pollution on kitchen walls and furniture, maintaining a clean kitchen environment Package list: 1 outlet 4 x screws