Make from PVC, this ventilation pipe check valves ensures durability and long-lasting . Allows for smooth airflows while avoiding backdrafts, ensuring efficient ventilation and avoiding smell from spreading. This check valves is designed for easy installation, saving time and effort. Just connecting it to the ventilation pipe, and it is ready to use. Suitable for various applications, including fan pipes, pipe projects, and ventilations. This check valves is a versatile for maintaining proper airflows and controlling the direction of ventilation.