Universal Locking Outlet, It Fits 3 inch and 4 inch Corrugated Pipe, 3 inch and 4 inch Sewer and Drain Pipe, 4 inch Sch-40 Pipe and 3 inch and 4 inch Triple Wall Pipe, Use With 9 inch , 12 inch 18 inch and 24 inch Catch Basin Series, and #930, #1230, #1830 and #2410.