4in x 3-1/2in | Clean Out | Hex Pipe Locknuts | Hex Reducer Bushings | NST (NH) x NPT Adapter | Reducer Coupling | Threaded Flanges | 1-1/2" x 1-1/2" x 3/4" | 1-1/2" | 2-1/2" x 2" | 2" x 1-1/4" | 4" x 2" | 4" x 3-1/2"