Canplas 193024 PVC DWV Reducing Coupling, 3 x 2-Inch, White - Pipe Fittings - Amazon.com
Charlotte Pipe 6 in. x 10 in. PVC DWV Pipe Increaser Reducer Bush PVC 00102 1950 - The Home Depot
Charlotte Pipe 6 in. x 6 in. x 4 in. PVC DWV Hub x Hub Sanitary Tee Reducing PVC 00401 2200 - The Home Depot
3" to 6" Inch Universal Duct Reducer/Increaser. Conect Any Two 3" inch to 6" inch Flex or Straight ducts. HVAC. Heating. Cooling. Kitchen and Bathroom Applications. - Amazon.com
NDS PVC Adapter, 3 in. DWV/SCH40 Hub X S&D Hub 3P15 - The Home Depot
Charlotte Pipe 1 in. x 3/4 in. PVC Coupling PVC 02100 3600 - The Home Depot