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3M Fire Barrier Pillows FB249, Small Size, Self-Contained, Intumescent, Re-enterable, Re-Useable, 2 in x 4 in x 9 Inch, 24/Case: Amazon.com: Industrial & Scientific
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3M Fire Barrier 1.45-in to 1.45-in H Firestop Caulk/Sealant in the Firestop Products & Systems department at Lowes.com
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