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Web9 Sheets 6mm Car Sound Proofing Deadener Heat Noise Insulation Closed Cell Foam. $29.89. Free shipping. 12 Sheets Car/Van Sound Proofing Deadening Insulation 10mm … WebAug 24, 2024 · Closed cell foam is a better air barrier than open cell foam, and can be used to control airflow as it is less permeable. For example, closed cell foam could be an effective gasket or seal for climate-control by keeping hot outside air from entering an air conditioned enclosure. callington b\u0026b
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