... junction box, conduit box, J-box, concentric box, conduit junction box, outlet box, drywall mud box, standard 1900 box, square conduit box, 4” square box, 4” square junction box, 4” square outlet box, standard 1900 box, 1900 plenum box, standard ... solutions using 1/2", 3/4" conduit sizes.4.We also manufacture many junction boxes with preinstalled cable clamps for non metallic ...