Charlotte Pipe 1 in. x 3/4 in. PVC Schedule. 40 90-degree S x S Reducer Elbow Fitting PVC 02300 4400HD - The Home Depot
Amazon.com: letsFix 1-1/2" PVC Fittings 3 Way (4-Pack), 1.5" PVC Pipe Connector PVC Elbow - Heavy Duty Furniture Grade 3 Way PVC Fittings for All DIY PVC Structure and Frames, Fits 1-1/2"
247Garden ASTM SCH40 5-Way PVC Elbow 3/4" Fitting
Charlotte Pipe 1 in. x 3/4 in. PVC Schedule. 40 90-Degree S x FIP Reducer Elbow Fitting PVC 02301 3000HD - The Home Depot
FORMUFIT 1" 3-Way PVC Elbow Furniture Grade Fitting in Black, 1.315" Actual ID, (Pack of 4), Made in USA, UV-Resistant, Impact-Proof, Easily Build 3-Point Corners with PVC Pipe - F0013WE-BK-4: Amazon.com: Industrial
1-1/4 in. 3-Way Furniture Grade PVC Elbow Fitting - White | FORMUFIT