BLUE60FRPACK5MM These packers are designed to be used in conjuction with the Blue 60 PU Foam, these intumescent strips are inserted around the frame fixings to provide the foam with a uniform surface during expansion and help prevent the foam flowing out onto the floor under its own weight. – Provides up to 60 minute fire protection on timber doorsets – Suitable for both metal and timber stud partitionings – Available in three thicknesses to suit gaps between 7mm and 30mm – Must be used with Blue 60 PU Foam to maintain fire rating certification