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3M Fire Barrier Cast-In Device$36.41
Intumescent device that firestops 2-inch (50.8 mm) metallic penetrations through fire-rated concrete floor assemblies. The device is installed by attaching directly to the form before a concrete slab is poured. Creates an opening through which mechanical, electrical or plumbing ...Intumescent device that firestops 2-inch (50.8 mm) metallic penetrations through fire-rated concrete floor assemblies.
The device is installed by attaching directly to the form before a concrete slab is poured. Creates an opening through which mechanical, electrical or plumbing penetrants can be routed after the slab is cured and forms are removed. Provides up to 3-hour fire protection.