21" Steel Hinged Flap Gate for PVC, CMP | Agri Drain This low-profile 48" grate fits

This low-profile 48" grate fits on the outside of Corrugated HDPE Drainage Pipe and is oversized to accommodate varying pipe ODs

Heavy steel grate collar designed to protect drainage intakes and improve water flow

This low-profile 36" grate fits on the outside of PVC or Corrugated Metal Pipe (CMP) and is oversized to accommodate varying pipe ODs

Designed to slide inside 4" I

Plastic slotted section for 10" Precision intake applications

21" Steel Hinged Flap Gate for PVC, CMP | Agri Drain This low-profile 48" grate fitsHelp keep damaging water out of drainage systems with this 21" steel hinged flap gate. It fits outlet ODs from 21" to 23 and is designed for PVC and Corrugated Metal Pipe (CMP).