Johns Manville Flex-Glas® EQ Formaldehyde-free™ flexible duct insulation is manufactured with our HERMax high performance rotary fiberization process and has a bio-based binder made primarily of rapidly renewable plant-based materials. It is a lightweight, highly resilient, fiber glass core specifically designed for use in the manufacture of finished insulated flexible ducts. Flex-Glas EQ provides excellent acoustical and thermal performance versus metal ducts in residential and commercial HVAC applications.
We build environmentsâ„¢. For more than 150 years, Johns Manville has focused on developing materials to make diverse environments stronger, more durable, and more energy efficient and comfortable. We manufacture premium-quality building and mechanical insulation, commercial roofing, glass fibers and nonwoven materials for commercial, industrial and residential applications. JM products are used in a wide variety of industries including building products, aerospace, automotive and transportation, filtration, commercial interiors, waterproofing and wind energy.
Through our 7,000 global employees, JM provides products to more than 85 countries and operates 45 manufacturing facilities in North America, Europe, and China. Since 1988, JM's global headquarters has been located in downtown Denver.