Sheet metal & Air Conditioning Contractors’ National Association


K-FLEX Duct® Liner Gray

K-FLEX Duct® Liner Gray provides the best combination of thermal and acoustic insulation while addressing IAQ concerns of any closed-cell, flexible elastomeric duct-lining product available. If your project specification calls for flexible, non-fibrous, closed-cell, elastomeric, or ASTM C1534 liner, K-Flex Duct Liner Gray should be your first choice. Call K-Flex USA for more information, samples and a distributor near you. Learn more...


K-Flex Duct Liner Gray is fiber-free, flexible, closed-cell elastomeric, thermal and acoustic duct liner for noise reduction, energy conservation and IAQ. It is available in a range of sizes up to a 2" thickness and 60" width.