New never used, just stored in the shed. 21 available, price per roll Fire Barrier EN is a reinforced stone wool roll for subdividing extensive cavities. Fire Barrier EN has been tested in a series of common applications, including below concrete soffits and within timber joist construction. The product is also suitable for use with service penetrations and in conjunction with a fire-resisting single-leaf timber door set. Fire Barrier EN is available with a black foil facing on one or both sides for single- and double-layer systems, respectively.