ISOVER offers options with Final mineral wool that give fire resistance to metal ductwork even though delivering thermal and acoustic Positive aspects. The basement extract ductwork system (revealed in brown) needs to be suited to clearing fumes and smoke within the basement degree. The method really should Ordinarily be rated https://fire-resisting-ductwork-i57899.bloguerosa.com/35924898/about-grease-tight-extract-ductwork