The RADIAN curved retractable pergola system provides a modern outdoor covering system to allow outdoor areas to be used in even the worst of weather conditions. The system offers a wind rating up to Beaufort class 11(Up to 117km/h) and is designed to stand up to even the worst of conditions rain, hail or shine. To ensure the highest level of protection Suntech systems focus on all the details, this is why all Suntech systems come standard finished with Stormguard Soft Touch edge seal on all parameters. Stormguard provides the ultimate protection against rain and draught intrusion around the outside of the system and is only available on our systems. Stormguards Soft Touch edge seal is produced from an exra soft & flexible rubber to ensure the best possible protection from the elements.us.