... all kind sof junction box name:switch box, 2 gang box , 1 gang box,flushing box2) sizes: 3"x3",3"x6"box, 20mm/25mm knockouts3 ... available6)2 gang box are used as surface mounting control box , junction box or general service box7)switch box protects wire and ... electrical equipment , components12)PVC 2 gang box are used as surface mounting ,control box , switch box or general service box1) 2013 the ...