This range hood outlet check valve is designed to prevent backflow and ensuring efficient ventilation in your kitchen, complements any kitchen decor while providing a reliable choice to keep unwanted smoke from re-entering your home. Features -Color:White -Material:ABS -Size: 19.00X19.00X10.00cm/7.47X7.47X3.93in - Applicable open diameter: 150mm-180mm -High efficiency: effectively prevents backflow of cooking fumes, keeping kitchen air fresh and clean -Heat resistant: made from ABS materials, ensuring safety and reliability -Easy installation: simple to install and maintain, saving you time and effort -Universal fit: suitable for various models of range hoods, offers versatile compatibility -Clog prevention: prevents blockage in the exhaust hose, extending the lifespan of your kitchen ventilation system Package list: 3 x Range Hood Check Valve