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Manufacturer 3M
Mfg Catalog # PM4
Cooper Electric Part # 178632


  • Inorganic, non-asbestos material is an excellent alternative to mineral wool, fiberglass or backer rod
  • Easy to use – smooth woven material pulls out quickly and tears off by hand without tools
  • Mold resistant per ASTM C 1338
  • Less irritating to skin vs. mineral wool
  • Fully portable for fast, easy installation
  • Approved for use in all UL-listed through penetration 3M firestop systems


  • Application: Commercial Construction
  • Color Family: White
  • Fire Rating: 2 Hour
  • Overall Length (Imperial): 246 in
  • Overall Length (Metric): 6.248 m
  • Overall Thickness (Imperial): 0.5 in
  • Overall Width (Imperial): 4 in
  • Overall Width (Metric): 102 mm
  • Product Color: Off-white
  • Product Key: PM 4
  • Product Number: PM 4
  • Product Type: Fire Barrier Packing Material
  • Water-tight: No


MDM UPC 05111518764
GTiN 00051115187643
Color Off White
Applications Commercial Construction
Family Brand Name 3M
Used With Metallic, Non-metallic, Insulated Pipe, HVAC and Power and Communication Cable Penetrants
Width 4 in
Thickness 0.5 in
Overall Length 246 in

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