DURAWALL

fire-resistant panels for building; fire-resistant panels made of metal, and non-combustible materials not of metal, for building; fire-resistant composite panels for building made of sheets of metal and a core made of non-combustible material; fire-resistant panels made of metal for building having a minimum thickness of 100 millimeters; fire-resistant panels for building made of metallic exterior sheets and an interior core made of non-combustible material, having a minimum thickness of 100 millimeters; fire-resistant panels made of metal, and insulating materials not of metal, for building; fire-resistant panels for building made of metallic exterior sheets and an interior core made of insulating material not of metal, having a minimum thickness of100 millimeters