A Class 3 shingle is a type of asphalt shingle designed for higher durability against impact. Rated by the Underwriters Laboratories (UL), Class 3 shingles undergo rigorous testing and must withstand a 1.75-inch steel ball dropped from 17 feet without cracking. This makes them a strong, impact-resistant option for areas prone to hail, helping to protect your home better than standard shingles.