all kinds of switch box ,flushing box , sizes: 3"x3" ,3"x6"20mm/ 25mm knockouts color : white Square stamping conduit box ... gang box , 1 gang box,flushing box,surface box2) sizes: 3"x3",3"x6"box, 20mm/25mm knockouts3) material : pvc4) Uses : electrical ... rent ,will no suffer from biotic attack10) Protects wire and cable from easy damage11) Installation during the process of construction ,electrical ...