3in x 1-1/2in | Compression Coupling | DWV x SDR 35 | Reducer Coupling | Reducer Couplings | Threaded Van Stone Flange | 1-1/2" x 1/2" | 2-1/2" x 1-1/2" | 2-1/2" | 2" x 1/2" | 3/4" x 1/2" | 3" x 1-1/2"