Resources
Flexible Duct Insulation
Johns Manville flexible air duct insulation, made with JM Formaldehyde-free? Flex-Glas? PC insulation, is designed and manufactured to meet the highest performance standards—starting with our own. JM revolutionized the insulation industry more than a decade ago by eliminating formaldehyde-based binders from our light-density fiber glass insulation. In addition, JM flexible duct insulation offers excellent thermal and acoustical performance, which provides improved comfort and energy efficiency for building occupants.
Flexible Duct Insulation
Designed for residential and commercial HVAC applications, Flex-Glas? PC?Formaldehyde-free? flexible duct insulation provides excellent acoustical and thermal performance versus metal ducts. The product is manufactured using our HERMax high-performance rotary fiberization process. Flex-Glas PC also has a lightweight, highly resilient, fiberglass core specifically designed for use in the manufacture of finished insulated flexible ducts. JM is proud to be an Associate Member of the Air Duct Council.
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R-value: 6.0 (1-5/8")
Recycle Content: 14%
Greenguard: Gold
