1.all kinds of switch box ,junction box , 2.sizes: 3"x3" ,3"x6"20mm/ 25mm knockouts 3 color : white or black 1) name:switch box, 2 gang box , 1 gang box,flushing box,surface box,wall box , cable box ,junction box 2) sizes: 3"x3",3"x6"box, 20mm/25mm knockouts3) material : pvc4) Uses : electrical or construction5)Payment terms: 30% T/T, balance before shipment6)Delivery day: within 15-20days after ...