Bend Seagull Third 4 inch fernco Sideways pie librarian
Fernco 6 in. Clay x 4 in. DWV Flexible PVC Coupling P1002-64 - The Home Depot
Fernco Flexible PVC PlumbQwik Tee - 4-in. Diameter - Ideal for In-Wall or Limited Space Connections - Rustproof Stainless Steel Clamps in the PVC Pipe & Fittings department at Lowes.com