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
3” Stove Pipe 45 Degree Elbow - Tiny Wood Stove
Southland 3/4 in. Black Malleable Iron 90 Degree FPT x MPT Street Elbow Fitting 520-304HN - The Home Depot
Charlotte Pipe 3-in PVC DWV 1/4 Vent Street Elbow in the PVC DWV Pipe & Fittings department at Lowes.com