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| Keywords: Caj8073 cabletray afterwards.jpg Underside of cable tray penetration after fire and hose stream testing leading to UL Firestop Certification Listing C-AJ-8073 Own 2007-06-26 Achim Hering Firestops Cable trays Fire testing Firestop mortar Plumbing Electric cables Concrete Cement CAJ 8073 3M Fire Barrier Mortar | ||||
