All purpose, hand held gap filling expanding PU Foam with patented "Genius Gun" application system. Re-usable up to 6 weeks, the Genius Gun applicator enables high precision, single handed use. Ideally suited for the installation of doors and windows, the sealing of pipe penetrations and for the creation of sound-proof sealing, Free of CFC's and HCFC's. Very low emission value once fully cured. Available in aerosol cans of 500ml and 750ml.