Profile: From the leader in fire protection, 3M has been creating innovative firestop systems for more than 25 years. Our complete line of fire protection products helps stop the spread of fire, smoke and toxic fumes. They’re easy to install and are approved for a wide variety of firestop applications by Underwriter’s Laboratories, Factory Mutual and Omega Point Laboratories. In fact, we’re the only manufacturer that can provide fully tested systems to firestop all of these scenarios: Through penetrations, Perimeter joints, Fire resistive joints, Structural steel, Emergency circuitry, Grease/air ducts