The National Diversified Sales 2400GRKIT 24" Black Square Catch Basin Drain Kit with Green Plastic Grate, the largest catch basin in the lineup, is designed for managing heavy flows from lawns, landscaped areas, parks, driveways, and courtyards. Kit includes a 2-opening catch basin and plastic drain grate made of high-density polyethylene (HDPE), three outlet adapters, two reducer rings, and one drain plug. Connects to 8", 10", and 12" drain pipes. Hassle-free limited lifetime warranty guarantees the NDS product is free from defects—or we’ll replace it.