Rubber Elbow 4" ID X 90 Degree Short Radius: Intake Hoses
TSX 4 Inch Galvanized 90 Degree Elbow Pipe Fitting, NPT Thread: Amazon.com: Tools & Home Improvement
Amazon.com: NDS 4P02 PVC 90-Degree Elbow, X Hub solvent-weld connections, for Use with 4-Inch Sewer and Drain Pipes, White, 1 Count (Pack of 1) : Everything Else
Charlotte Pipe 3/4-in 90-Degree Schedule 40 PVC Elbow (10-Pack) in the PVC Pipe & Fittings department at Lowes.com
Charlotte Pipe 4 in. PVC DWV 90-Degree Hub x Hub Long Sweep Elbow PVC003041200HD - The Home Depot