10Pack 1-1/2" PVC Pipe Coupling Adapter Pipe Fittings (Socket x Socket) Contractor Pack Schedule 40 Heavy Duty 1.50 Inch PVC Slip Socket Connectors for DIY PVC Shelf Garden Support Structure, White - Amazon.com
4 Way Elbow PVC Pipe Fitting,Furniture Grade,1/2-inch Size Tee Corner Fittings White - Walmart.com
Largest selection of common and unique PVC pipe fittings
FORMUFIT 1-1/2" 3-Way PVC Elbow Furniture Grade Fitting in White, 1.9" Actual ID, (Pack of 4), Made In USA, UV-Resistant, Impact-Proof, Easily Build 3-Point Corners with PVC Pipe - F1123WE-WH-4: Amazon.com: Industrial