... / 25mm knockouts color : white material : pvc 1) name:swithc box, 2 gang box , 1 gang box,flushing box,wall box2) sizes ... PVC 2 gang box are used as surface mounting ,control box , switch box or general service box 3x3 box , pvc ... material . 200pcs/outer packing 3x6 box , pvc material ,200pcs/outer packing good quality wall box with white color ...