Charlotte Pipe 3-in x 3-in x 3-in x 2-in x 2-in PVC DWV Reducing Left and Right Inlet Sanitary Tee in the PVC DWV Pipe & Fittings department at Lowes.com
5835-9-9 - Double Sanitary Tee with Two 90° Inlets Hub - ABS DWV On NIBCO
Genova Products 73531 Reducing Double Sanitary Tee Pipe Fitting, 3" x 1 1/2" - Pipe Fittings - Amazon.com