PVC 90 Degree Elbow Pipe Connector – 3/4 inch MNPT Male Pipe Thread x 3/4 inch Slip Socket 90 Degree Street Elbow SCH 40 for Home Sewer Plumbing Water Line – White - Amazon.com
Charlotte Pipe 4 in. PVC DWV 90-Degree Hub x Hub Elbow PVC003001400HD - The Home Depot
Charlotte Pipe 4-in 90-Degree PVC DWV Elbow in the PVC DWV Pipe & Fittings department at Lowes.com
Charlotte Pipe 4 In. Schedule 40 90 Deg. Long Sweep DWV PVC Elbow (1/4 Bend) - Gillman Home Center