3M Fire barrier moldable putty pad in red color, has pliable one part intumescent firestop construction that is designed for wall openings and through penetrations. This putty pad provides cold smoke and draft seal, which reduces the noise transfer. It prevents the spread of smoke, fire and noxious gases for up to 4 hours. Putty pad is non-corrosive to metal, so it is suitable to use with synthetic cable jackets. It measures 1.4 Inch x 11 Inch. Putty pad is UL listed and meets ASTM standards.