Our web site is a one-stop shop for your firestop questions. And our links directory will connect you to many other industry trade associations, government agencies and testing facilities. Those sites will have additional information and expertise that you may find helpful when designing and specifying firestop systemsAn assembly consisting of 1) the penetrant or penetrants 2) the opening through a particular type of wall or floor, and 3) the firestop materials and design that are used to seal the opening or protect the penetrants. to save lives and protect property.