PVC Increaser/Reducer Adapter, 3 In. DWV/SCH40 Hub X 4 In. S&D Hub
Connect 3 in. Drain Waste Vent (DWV)/Schedule 40 (SCH40) pipe to 4 in. Sewer and Drain (S&D) pipe with the PVC Increaser/Reducer Adapter. The drain fitting also connects 3 in. DWV/SCH40 pipe to drainage products compatible with 4 in.