... resistance(2) UV stability and handling, with excellent UV resistaAnce(3) excellent wear-resistant, anti-ozone, anti-bio-corrosion performance(4) to ... (6) the middle chip , sealing performance even more remarkable, with doors and windows material compatibility (7)provide height of 3 ... easier to install (8)suitable for DIY market, in line with BS6375, BS5368, BS476 and smoke test and noise test standard ...