... , 1.8*2.4, 2*3, 2.2*3.5, 3*5, 3.2*6, 3.5*6.9 3.Support rod:2.6, 2.8 ... , 3.0, 3.8, 4.2, 5, ... 2, 1.8*2.4, 2*3, 2.2*3.5, 3*5, 3.2*6, 3.5*6.93.Support rod:2.6 ... , 2.8, 3.0, 3.8, 4.2, 5, 6.0, 0Johnson screens consist of V-shape profile wire and ... it has sturdy constriction and good mechanical property.the V-shape section plane can avoid blockage,and make sure ...