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Keywords: Conduit busduct.jpg Topside of firestop with penetrants consisting of electrical conduit on the left and a bus duct on the right The firestop consists of firestop mortar on top and rockwool on the bottom for a 2 hour fire-resistance rating Own 2006-11-10 Achim Hering Electrical conduit Cement Firestops Operable firestops Firestop mortar Bus ducts BIO Novasit K10 Mississauga Civic Centre CP25 November 2006 in Canada 2006 in Mississauga low quality |