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3" and 4" Universal Locking Outlet (fits 9" sq., 12" sq, 18" sq. Basins)
Fits Dura-Slope Catch Basin
 

Fits 3" & 4" Corrugated pipe, 3" & 4" Sewer and Drain Pipe,
4" SCH. 40 Pipe and 3" & 4"
Triple Wall Pipe.
Note:
Locking Outlet snaps onto most 3" & 4" Corrugated Pipe.