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The Polylok 300mm (12″) Square Riser is a durable and reliable riser solution designed specifically for use with Polylok 12″ square drainage boxes, catch basins, and inspection chambers. Engineered for performance across diverse environments in Europe and the UK, this riser provides safe and direct access for inspection, servicing, and maintenance of underground drainage systems.
Manufactured from tough, corrosion-resistant materials, the Polylok 12″ Square Riser delivers long-lasting performance in demanding conditions such as heavy rainfall, fluctuating temperatures, and coastal moisture. Its screw-together design allows the riser to securely attach to Polylok square drainage boxes, ensuring a stable, dependable fit while maintaining structural integrity.
Polylok 300mm (12″) Square Riser is ideal for professionals working with stormwater systems, property drainage networks, landscape drainage, and utility access points. Whether installed in residential gardens, commercial sites, municipal drainage networks, or utility infrastructure, the Polylok 300 mm Square Riser ensures quick and reliable access to the box or chamber below.
Lightweight yet robust, the riser is easy to transport, handle, and install—making it a practical choice for contractors, drainage engineers, installers, and maintenance teams. It increases the height of Polylok square drainage boxes and catch basins to bring the access point to ground level, enabling convenient inspections without excavation.
Choose the Polylok 300mm (12″) Square Riser for a dependable, secure, and efficient access solution tailored specifically for Polylok’s square drainage systems. Perfect for applications throughout Europe and the United Kingdom, it supports long-term drainage performance and simple system management.
