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ProSet Systems was founded in 1982 creating and delivering innovative sleeving products and methods of pipe fabrication for the mechanical and electrical trades. ProSet was the first company to fire test a cast in place firestop sleeve device at UL in 1982. In1983 all National Building Codes included a new firestop requirement section that made it mandatory to used ASTM E-814 fire tested penetrations. This requirement was made to order for the ProSet sleeving system giving ProSet a head start of providing better firestop devices through the US and Canada
