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This 6" tall extension uses a powder coat finish to resist corrosion and is made to expand box depth without changing the basin footprint
and is built for larger runoff collection points
This 18" version fits on the outside of PVC or Corrugated Metal Pipe (CMP) and is intended for heavier-duty surface conditions
Its low-profile design fits most existing intakes
7" Tall x 7 3/4" PVC Stoplog Board | Agri Drain This 6" tall extension usesPVC stoplog board with stainless steel hooks for strength and durability. Built for Inline Water Level Control Structures, this 7" tall x 7 3 4" wide board delivers adjustable water control, dependable sealing, and durable performance in standard structures.
