... ,long life for use '3)Switch box are used as surface mounting control box ,junction box or general service ... : pvc , 200pcs for export cartons . octagonal box , sizes : 4"x4", 100pcs for export cartons, 20pakages for inner packing sizes: 4 ... "x2", white color, 100pcs for export cartons ,20pcs for inner packing octagonal box with cavity box ...