... switch box ,flushing box , sizes: 3"x3" ,3"x6"20mm/ 25mm knockouts color : white material : pvc ) name:swithc box, 2 gang box , 1 gang ... switch box protects wire and cable from easy damage8)Installation during the process of construction ,equipment, component9) PVC 2 gang box, 1 gang ... equipment , components12)PVC 2 gang box are used as surface mounting ,control box , switch box or general service box ...