The Osma Squareline Internal Stopend is a robust and reliable gutter accessory, designed to cap off the end of 100mm diameter square line guttering systems. Made from high-quality PVC, it ensures durability and longevity for your draining needs. This stopend is also easy to install, providing efficient water flow control while minimising the risk of water leakage. Ideal for both residential and commercial buildings, its white colour gives it a neat finish that blends seamlessly with most exteriors.