The Strainsert SJB Series Summing Junction Boxes are for parallel averaging of 2 to 4 similar transducers. The standard SJB is available in a NEMA- 12 steel enclosure (NEMA-4X packages are optionally available). The NEMA-12 comes in both a connector style and a cord grip style (NEMA-4X available with cord grips only). Cord grips accept cables with diameters between 0.250” to 0.375” inches. The removal of a gasket-tight lid enables the user to make cable wire connections to screw type terminal blocks mounted on an internal circuit board. Overall enclosure dimension are 7.5” (L) x 4.25” (W) x 3.5” (H).