Apparatus and method for sealing an opening in a fire partition through which a combustible conduit extends

摘要: An apparatus for sealing an opening, or the like, in a fire partition through which existing combustible conduit extends includes first enclosure capable of being fastened to on one side opening and having recess therein. A second non-combustible opposite enclosure, has therein is hingedly connected enclosure. The enclosures lie common plane are operable, use hinged connection, be spread apart installation over can closed together such that recess-formed defined about by recesses. First shutter doors slidable respectively, between first, open position unobstructed second, obstructed doors. urged into recess-defined when burned away.