The 3M™ Fire Barrier Moldable Putty Pads feature a one-part, ready-to-use, re-enterable, intumescent putty that can be easily formed to firestop wall-openings and through penetrations in fire-rated assemblies.The 3M Fire Barrier Moldable Putty Pad provides up to 4 hours of fire protection. This protective and moldable putty helps prevent the spread of fire, smoke and noxious gas and acts as a draft and cold smoke seal for systems with L-Ratings. In addition to its fire-resistant properties, the 1/10th inch (2.5 mm) thick pads have airborne sound reduction characteristics which helps minimize sound transmission through assemblies requiring an STC rating. This putty meets the requirements of key life safety codes, including the International Building Code (IBC), NFPA 5000, NEC (NFPA 70), NFPA 101 and NBC (Canada) Building Codes. It also meets the intent of LEED green building program credits VOC environmental regulations.