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717 17th St. Denver, CO 80202
United States of America

About Johns Manville

Johns Manville (JM), a Berkshire Hathaway company, is a leading manufacturer and marketer of premium-quality products for building insulation, mechanical insulation, industrial insulation, commercial roofing and roof insulation, as well as fibers and nonwovens for commercial, industrial and residential applications. In business since 1858, the Denver-based company has annual sales over $4 billion and holds leadership positions in all of the key markets that it serves.

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