KOITOILET II 4" Bottom Drain w/ Dome
The Simple Solution for Koi Pond Bottom Drain
- Made of heavy duty injection molded ABS.
- Thick flange and liner ring for better liner grip.
- Flare design for smooth flow.
- Fits 4" Sch40 PVC Elbow or Coupling.
- Excellent for liner and concrete installation.
I like these a lot and now that I have them could envision several embedded in between the rocks on the bottom of the pond. Great price too