4" Schedule 80 CPVC Straight Coupling - Socket x Socket
4" x 3" Schedule 80 PVC Coupling Socket, 829-422
4" x 3" PVC DWV Increaser Reducer Coupling (Hub x Hub)/Wholesale Pricing
20 Pack 3/4" PVC Pipe Coupling Adapter Pipe Fittings (Socket x Socket) Contractor Pack Schedule 40 Heavy Duty 3/4 Inch PVC Slip Socket Connectors for DIY PVC Shelf Garden Support Structure, White - Amazon.com
NDS 4-in PVC Sewer and Drain Coupling in the Sewage Pipe & Fittings department at Lowes.com
Amazon.com: FangKingNo10pcs 3/4" White PVC Pipe Coupling Adapter Pipe Fittings (Slip to Slip) Schedule 40 Easy to Install,and High Tensile for Home or Industrial Use (1 Pack of 10pcs) (0.75 Inch) :
Buy Wholesale China 3inch 4 Inch White Color Upvc Drain Fittings & Upvc Drain Fittings at USD 0.2 | Global Sources
Uxcell 3/4 Inch UPVC Elbow Fitting 6 Way PVC Pipe Fittings Connector Furniture Pipe Joint - Walmart.com