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3M Packing Material R1.88 4-in x 20.5-ft Unfaced Fiberglass Roll Insulation

3M Packing Material R1.88 4-in x 20.5-ft Unfaced Fiberglass Roll Insulation

Item #: 670309 |  Model #: PM4

Not Yet Rated

Packing Material R1.88 4-in x 20.5-ft Unfaced Fiberglass Roll Insulation

  • Easy-to-dispense, non-asbestos, inorganic material designed to be used as an alternative packing material to mineral wool, fiberglass and backer rod in through-penetration firestop systems
  • Smooth-textured woven material can be torn by hand, eliminating the need for a knife
  • Product is less irritating to the skin when compared with conventional mineral wool
  • Approved for use in all UL-listed through penetration 3M firestop systems
  • For use in through penetrations and is to be packed around items penetrating the assembly
  • Formaldehyde: this chemical or chemical compound is not intentionally added
  • Meets ASTM C 1338 Standard Test Method for determining fungi resistance of insulation materials and facings
Series Name Packing material
Insulation Type Fiberglass
R-Value per Inch 3.76
Maximum R-Value 1.88
Width (Inches) 4
Length (Feet) 20.5
Thickness (Inches) 0.5
Package Weight (lbs.) 19.6
Coverage Area (Sq. Feet) 6.83
Faced/Unfaced Unfaced
Sound Barrier No
For Use in Attics No
For Use in Basements No
For Use in Ceilings No
For Use in Crawlspaces No
For Use in Doors No
For Use in Duct No
For Use in Electrical Yes
For Use in Floors Yes
For Use in Garage Doors No
For Use in Masonry Yes
For Use in Plumbing Yes
For Use in Vents Yes
For Use in Walls Yes
For Use in Windows Yes
Fits 2 x 4 Walls No
Fits 2 x 6 Walls No
ENERGY STAR Certified No
Vapor Retardant No
Formaldehyde Free Yes
Warranty 90-day
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