Keywords: Caj8083 mortar reentries afterwards.jpg Firestop mortar re-entries in a cable tray penetration underside after 2 hour fire test with 30PSI hose-stream leading to UL Firestop Certification Listing C-AJ-8073 Own 2007-06-25 Achim Hering Firestops Cable trays Fire testing Firestop mortar Cement 3M Fire Barrier Mortar |