7" Tall x 15 3/4" Overmolded Bottom Stoplog Board | Agri Drain This kit includes the 3A577BA

This kit includes the 3A577BA transmitter and 3A577CA TUFF Receiver

Plastic solid section for 8" Precision intake applications

Large-capacity Valterra valve for reliable water flow control in drainage systems

and the 12" tall x 23 3/4" wide profile fits standard 18" applications

7" Tall x 15 3/4" Overmolded Bottom Stoplog Board | Agri Drain This kit includes the 3A577BABlack overmolded bottom stoplog board for Inline Water Level Control Structures. Injection molded for rugged durability, with a thicker bottom o ring. This bottom most stoplog must be installed first and is sized for standard Inline style structures with inside dimensions of 16" wide x 20" depth.