Advanced Drainage Systems Sump Pump Lid is crafted from black heavy-duty polyethylene, ensuring durability and long-lasting performance. This sump pump lid features enhanced dimensional tolerances for a precise fit and includes a partial turn secure lid safety mechanism to keep it firmly in place. Designed with convenience in mind, it has an in-place housing for self-tapping screws and knockouts for discharge, power cord, and vent. The lid measures 19 inches in diameter, making it a reliable component for sump pump installations. Model Number: 1537ADL