Sweep bottom design to eliminate trapping debris.

Full 4" height over horizontal discharge pipe.

1" Air supply connection at the bottom through center column.

Screws are fully embedded in large and strong screw pockets.

Threaded center column for easy disassemble and maintenance.

Wide and thick flange for better liner grip.

Slanted air dome and high quality air diffuser with internal check valve function.

Made of heavy duty injection molded ABS.

Thick flange and liner ring for better liner grip.

Flare design for smooth flow.

Fits 4 inch Sch40 PVC Elbow or Coupling.

Excellent for liner and concrete installation.