The Polypipe UG438 is a robust 320mm diameter side riser thats designed to facilitate effective water management in construction and landscaping projects. This high-quality product, manufactured by Polypipe, a leading brand in the industry, is 135mm deep and is perfect for use in various drainage systems. With its durable design, this side riser ensures reliable performance and longevity. Its engineered for easy installation and use, making it an excellent choice for both professionals and DIY enthusiasts.