Ultra R and Ultra 9 are heavy-duty corrugated polycarbonate panels from H&F Manufacturing Corp. Ultra R and Ultra 9 are the strongest corrugated polycarbonate panels in the market today. They take on harsh weather conditions, impacts from warehouse equipment, corrosive chemicals and liquids, and still makes your building look like new. Ultra R and Ultra 9 are the ultimate siding and roofing polycarbonate panels for your facility. They are designed specifically for new or retrofit siding or roofing applications for commercial, industrial and residential structures. Ultra R and Ultra 9 Panels are available in Clear, White Opal (45% LT) and Soft White (85% LT). Engineered to maintain color stability and outstanding light transmission, the panels lend themselves to a wide variety of applications including, but not limited to, skylights, sidelights, siding and roofing. Ultra R and Ultra 9 have a non-combustible flame spread rating of 6; considerably less than competitive non-metallic panels.