NDS PVC S&D 90° Long-Turn Elbow, 4 in. Hub X Hub 41P0 - The Home Depot
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
6 in. Corrugated Drain Tile 90-Degree Elbow 20% Off - French Drain Systems | Curtain Drains | Macomb, Oakland, Lapeer, St. Clair County