15" Heavy Traffic Grate Collar for Corrugated HDPE Drainage Pipe | Agri Drain This 36" collar fits on

This 36" collar fits on the outside of Corrugated HDPE Drainage Pipe and holds the grate flush inside the collar

This 36" tall Section 2 piece uses 5/16" holes

It fits outlet ODs from 21" to 23" and is built for durable outlet protection on large PVC and Corrugated Metal Pipe (CMP)

This 18" version fits on the outside of Corrugated HDPE Drainage Pipe and is intended for heavier-duty surface conditions

15" Heavy Traffic Grate Collar for Corrugated HDPE Drainage Pipe | Agri Drain This 36" collar fits onHeavy steel traffic grate collar designed for traffic areas while protecting drainage intakes and improving water flow. This 15" collar fits on the outside of Corrugated HDPE Drainage Pipe and holds the grate flush inside the collar.