Grand Sequoia IR Shingles offer the look of rugged wood shakes with the protection of an impact-resistant shingle. Passes UL 2218 Class 4, UL's toughest impact test (shingles show no evidence of cracks or ruptures on front or back of shingle immediately after impact). May qualify for insurance discounts in the US (Insurance discounts may not be available in your area, Where available, insurance discounts may vary, Contact your insurance provider for information). Revolutionary design includes SBS modified asphalt formula for rubber-like flexibility and maximum impact resistance. Meets ASTM D3161, Class F and ASTM D7158, Class H wind ratings from Underwriters Laboratories — the highest ratings possible. Advanced Protection Shingle Technology results in a high-performance shingle, providing excellent protection for your home while reducing the use of precious natural resources.