Amerimax
Universal pipe connector, inner dimension connects to 3" pipe & outer dimension connects to 4" pipe, for use in connecting pvc pipe with plastic corrugated flex drain pipe.
World Wide Sourcing Galvanized Pipe Nipple
Genova PVC Sewer Cap (Hub)
Genova Products PVC Sewer 22 1/2° Elbow
Genova Products PVC DWV Fittings 90° Sanitary Elbow
Advanced Drainage Systems™ Single Wall Internal Couplers