1-4 CELLS EQUALIZATION BOARD MOUNTED INSIDE SST CASE ATEX II 1GD approved 4 1 cable glands-plugs IP67 protection rating Dimensions 143 x 144 x 44 mm; centre distance 112 x 127 mm Earth terminal Lightning and electrical shock protection device 1-4 cells equalization board (4/6 wires) mounted inside AISI 304 stainless steel case.