4" Clean Check Extendable Backwater Valve | Agri Drain This 18" collar fits on

This 18" collar fits on the outside of Corrugated HDPE Drainage Pipe and holds the grate flush inside the collar

cushioned rubber handles

Special-sized to slide inside your 8" Hickenbottom Intake

weather-resistant construction sized 18

Work faster and with more confidence in the field with these Survey Marking Flags: 100-pack Fluorescent Orange (2

4" Clean Check Extendable Backwater Valve | Agri Drain This 18" collar fits onPrevent sewage backup into a residence or building with this 4" Clean Check Extendable Backwater Valve. It installs outside the structure without a costly manhole, allows ground level maintenance, attaches to SCH40 PVC, and supports installations up to 12' deep.