15Pack 3/4Inch 4 Way PVC Fittings, Heavy Duty PVC Elbow Side Outlet Tees, Furniture PVC Tee Corner Fittings for Building PVC Furniture Greenhouse Shed Pipe Fittings Tent Connection: Amazon.com: Tools & Home
4 Way 3/4-Inch Tee Elbow PVC Pipe Fitting Build Heavy Duty Greenhouse Frame Furniture Connectors Tent Connection (Pack of 8) - Amazon.com
Formufit 1 in. Furniture Grade PVC 4-Way Tee in White (4-Pack) F0014WT-WH-4 - The Home Depot
3/4 in. 4-Way Tee PVC Fitting (Box of 80) — FORMUFIT Direct
3/4 in. 4-Way Furniture Grade PVC Tee Fitting - White | FORMUFIT
letsFix 4 Way PVC Fittings 1-1/4 Inch (10-Pack), Furniture Grade PVC Pipe Connector PVC Elbow for All DIY PVC Structure and Frames - Fits 1-1/4" Sch 40 PVC Pipes - Amazon.com
Formufit 3/4 in. Furniture Grade PVC 4-Way Tee in White (8-Pack) F0344WT-WH-8 - The Home Depot