Fernco DWV Sewer and Drain PVC Iron Pipe Hub Adapter, 4 In x 3 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 straightforward and efficient. It creates a water and gas-tight joint, ensuring a secure and dependable connection. Specifically designed for service-weight cast-iron hubs, this fitting an effective way to join different piping materials with ease and confidence. Model Number: P44U-305