The Polylok Catch Basin Riser 12 in. is a versatile and essential addition to any landscaping project. Designed with a square grate shape and made from durable polypropylene material, this catch basin riser is built to withstand the elements. It includes a silt filter, grate, seals/nuts, and screws, providing everything you need for easy installation. With a maximum pipe size of 6 in. and a minimum pipe size of 2 in., this riser is suitable for use with corrugated pipe. Its two openings allow for efficient drainage, making it ideal for various applications. Upgrade your landscaping with the Polylok Catch Basin Riser 12 in.