12" x 12" Clay-Clay Coupling | Agri Drain This 15" collar fits on

This 15" collar fits on the outside of Corrugated HDPE Drainage Pipe and holds the grate flush inside the collar

allowing sediment to settle and debris to be filtered out before entering the drainage system

includes a built-in restrictor

Designed to slide inside 36" I

this riser has 4' of 1" holes at 36 holes per foot for maximum opening density in this size and height

12" x 12" Clay-Clay Coupling | Agri Drain This 15" collar fits onFlexible Fernco coupling for secure drainage pipe connections between 12" clay and 12" clay. Tough, flexible PVC construction helps create a reliable, leak proof seal and accommodate slight OD variation for easier installation.