When you want the ultimate protection and impressive curb appeal, you’ll want Duration Shingles. They are specially formulated on a TruDefinition color platform that gives them dramatic color contrast and dimension in a wide range of popular colors. Beyond the great look, Duration Shingles are Rated Class 3 for Impact Resistance and come with the advanced performance of patented SureNail Technology—with Triple Layer Protection in the nailing zone for superior holding power. With SureNail Technology, strength and durability are built into every Duration Series shingle, thanks to the unique fabric strip in the nailing area. This unique shingle design provides outstanding gripping power.