The PVC backflow preventer for sewer systems is designed to efficiently block reverse flow, ensuring a clean and odor-free environment. Its high-capacity drainage capability makes it ideal for various plumbing applications. The sewer cleanout cover provides convenience and reliability, making it a must-have for maintaining a clean drainage system. Features -Color:White -Material:PVC -Size:14.50X11.00X11.00cm/5.70X4.32X4.32in -Note:Suitable for 110mm diameter sewer -Sturdy material: made from good and practical PVC material, this backflow preventer is built to last, ensuring longterm reliability and performance in your drainage system -High flow design: engineered for high flow capacity, it effectively prevents clogs and ensures smooth drainage, making it ideal for heavy duty applications -Convenient and practical: sewer cleanout cover provides convenience and reliability, making it a must-have for maintaining a clean drainage system -Odor prevention: designed with an odor prevention feature, it helps keep your environment from unpleasant smells, enhancing overall comfort -Easy installation: simple and quick to install, this backflow preventer requires no special tools, making it a good addition to your plumbing setup Package list: 3 x Sewer Cleanout Cap