... box , sizes: 3"x3" ,3"x6"20mm/ 25mm knockouts color : white material : pvc 1) name:swithc box, 2 gang box , 1 ... ,gang box with no smell attracting rotent ,will no suffer from biotic attack.2)Good insulation characteristic ,good insulation property,good ... or general service box7)switch box protects wire and cable from easy damage8)Installation during the process of construction ,equipment, component9 ...