... of switch box ,flushing box , sizes: 3"x3" ,3"x6"20mm/ 25mm knockouts color : white material : pvc ) name:swithc box, 2 ... gang box,flushing box2) sizes: 3"x3",3"x6"box, 20mm/25mm knockouts3) material : pvc4) Uses : electrical or construction5)Payment terms ... mounting ,control box , switch box or general service box pvc conduit surface switch box