48" Anti-Vortex Plate & Hardware | Agri Drain they use a 5" x

they use a 5" x 6" polyethylene flag on a 33" steel wire staff for surveying

This 40" tall section snaps together with other Hickenbottom components

5" and is built specifically for Corrugated HDPE Drainage Pipe

25" to 20" and is built for durable outlet protection on PVC and Corrugated Metal Pipe (CMP)

Its compact short-handle design gives better control in tighter work areas

48" Anti-Vortex Plate & Hardware | Agri Drain they use a 5" xHelp reduce swirling flow, decrease entrained air into the pipe, and improve discharge efficiency with this 48" Anti Vortex Plate & Hardware. This galvanized plate is sold separately from the matching standard bar guard.