3" x 2-1/2" Sch 40 PVC Reducer Coupling Soc 429-339
NIBCO 3 in. x 2 in. PVC DWV Hub x Hub Reducing Coupling Fitting C4801HD32 - The Home Depot
3 x 2" PVC Duct Reducer Coupling 1034-RC-0302
Amazon.com: White Sch 40 PVC Pipe Reducer Fitting - 3/4 Inch MNPT Male Pipe Thread x 1/2 Inch Slip Socket - PVC Male Adapter Reducing Pipe Fitting - PVC Pipe Connectors for
3" x 2 1/2" PVC Schedule 40 Reducer Coupling Socket x Socket, 429-339