18" Heavy Traffic Grate Collar for Corrugated HDPE Drainage Pipe | Agri Drain and is a strong choice

and is a strong choice when you need a twist-lock intake section with height adjustability and ASTM F405-compliant construction

Plastic blind tee for 8" and 10" Precision intake applications

Prevent backflow in drainage and plumbing lines with this 4" PVC Check Valve

includes a built-in restrictor

18" Heavy Traffic Grate Collar for Corrugated HDPE Drainage Pipe | Agri Drain and is a strong choiceHeavy steel traffic grate collar designed for traffic areas while protecting drainage intakes and improving water flow. This 18" collar fits on the outside of Corrugated HDPE Drainage Pipe and holds the grate flush inside the collar.