3M PM4

3M PM4 FB PACK MATL PM4--BULK 4INX2
Fireproofing Products
6955475 PM4
3M
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3M Our 3M Fire Barrier Packing Material PM4 is designed and fully approved as an alternative packing material to mineral wool, fiberglass and backer rod in UL-listed through-penetration 3M firestop systems. Strong, flexible and non-combustible per ASTM E 136, this non-asbestos mold-resistant material is fully portable and can be installed without tools.
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