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http://www.jm.com/
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Johns Manville, a Berkshire Hathaway company, is a leading manufacturer and marketer of premium-quality building insulation, commercial roofing, roof insulation, and specialty products for commercial, industrial, and residential applications. JM’s product offerings include: Formaldehyde-free™ fiber glass building insulation, commercial roofing membranes and roof insulations, filtration media, and mats and reinforcements.
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