For additional assistance or price and availability:
Installers simply snap a metallic/non-metallic 3M™ Fire Barrier Cast-In Device into the adaptor no fasteners are required and attach it to the metal decking before concrete slabs are poured. Adaptor/device assemblies are firestop tested up to 3 hrs.
3M CO. - ELECTRICAL MARKETS DIV.
Commercial, Industrial and Residential Applications; Typically used in new installations when the floor assembly is concrete poured over a fluted