The RS Plus market umbrella is manufactured using tensile aluminium as the core of the roof frame and reinforced with stainless steel. The mast is 35mm dia 2mm wall stainless steel. This gives superior rigidity and strength, whilst remaining only 15 kilos. As with the Lambert there are 12 tensioned ribs. In terms of cost and performance this is market leader. The large models in the range are fitted as standard with a telescopic facility to enable the open roof height to be adjusted. The canopy is either polyester of more robust acrylic with a scalloped valance (straight edge as option). Hooking points for rain gutters and side sheets are fitted every half metre inside the valance.