Fernco DWV Sewer and Drain PVC Iron Pipe Hub Adapter, 4 In x 4 In. serves as a reliable connection solution between plastic DWV Schedule 40 or Schedule 30 piping and cast-iron pipe hubs. This adapter eliminates the need for packing, chemical mixtures, or additional materials during installation, making the process simpler and more efficient. Designed specifically for service-weight cast-iron hubs, it ensures a water and gas-tight joint, providing a secure and durable connection. This product an effective way to join different piping materials with ease and confidence. Model Number: P44U-405