Fits 6 Inch Sewer and Drain Pipe, 6 Inch Corrugated Pipe. Locking outlet snaps onto most 6 Inch Corrugated Pipe. One end fits into 9", 12", 18" and 24" Catch Basin Series or #930, #1230, #1830, and #2410 adapters. For use with the 24" Catch Basin Series also requires #2410.