The catch basins we provide are manufactured in round and rectangular configurations. The round catch basins are manufactured in 600 mm, 750 mm, and 900 mm inside diameters. These catch basins are designed to accept a concrete lid that may have one of the various style openings we provide in order to suit the casting that is required. The rectangular catch basins are designed to have the cast iron frame and grate sit directly on top without the need for a concrete lid. Grade rings in various styles are provided in 50 mm, 75 mm, and 100 mm thickness in order to achieve construction of finished grade.