K-Flex Duct Liner, Plain, Gray

K-Flex Duct Liner Gray is elastomeric, closed-cell insulation specially designed as a fiber-free alternative to lining air handling units and ducts. A uniquely tough skin surface is easy to clean and functional, providing an ideal surface to resist moisture and dirt. The double-sided skin can be used with either side facing away from the applied surface, resulting in less waste if one side becomes damaged.