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3M 3" Fire Barrier Cast In Device for Metal Pipe

Brand: 3M Mfg#: 3MCID 12/BX
Product#: 4793MCID
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Intumescent device that firestops 3-inch (76.2 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.


  • Meets UL Water Leakage Test, W Rating - Class 1 requirements for systems tested and listed in accordance with ANSI/UL 1479 (see system details)
  • Rugged one-piece design to withstand every-day bumps, kicks and hard knocks of the construction process
  • Installs securely by attaching directly to flooring deck
  • Models for metallic (black cap) and non-metallic (white cap) penetrating items
  • Firestop tested for up to 3 hours in accordance with ASTM E 814 (UL 1479)
  • Easily adjusted height accommodates concrete thickness from 2-1/2 in up to 8 in (57.2 mm to 203.2 mm)
  • UL Classified for 2- and 3-hour fire (F) rating, 1- and 3-hour temperature (T) rating
  • Red color easily identifiable as fire-rated device