Roll top fencing - rolled beam section at top and bottom edge Ollow sections or 80 ¡¨¢ 60 ¡¨¢ 2.5 mm rectangle hollow sections and fitted with m8 threaded inserts for securing panels, posts come inclusive of top caps. This type of security fencing has the benefits of aesthetic appearance, high rigidity, excellent through vision, wide range of color, and suitable where safety is a consideration. Top round roll fencing for pool is also offered by us, please see the right picture.