CPRGIUNTI AF SEISMIC JOINT is an element specifically designed and certified as a fire protection system for expansion joints, particularly suitable when large movements of the support are foreseen or, as in the case of tall buildings or for seismic risk areas. The mattresses are easy to install and they have to be fixed to the ceiling or to the wall with simple expansion plugs. The CPRGIUNTI AF SEISMIC JOINT consists of two mattresses of stone wool with an interposed ablative treatment, the visible sides are covered with an aluminium foil screened with metal mesh. Once mounted the mattress should be applied on the side not exposed to fire a metal sheet, metal mesh or metal joint cover thick at least 10/10 mm. The product thus mounted, it is able to ensure a resistance to the fire of the Class EI 120 or EI 180