... box , sizes: 3"x3" ,3"x6"20mm/ 25mm knockouts color : white material : pvc 1) name:swithc box, 2 gang ... :1)No rust occurs like metal pipe ,gang box with no smell attracting rotent ,will no suffer from biotic ... , component9) PVC 2 gang box, 1 gang box with no smell attracting to rent ,will no suffer from biotic ... 3x6 box , pvc material ,200pcs/outer packing good quality wall box with white color