CCWI -181, Grey, 11oz.cartridge,is a versatile Indoor/Outdoor water based duct sealant. This all purpose duct sealant is for use on all types of metal duct, glass fiber duct board, and flex duct, as well as duct fabric and flexible tubing runouts. CCWI - 181 incorporates a built-in polyester reinforcement for exceptional strength, with UV inhibitors for outdoor use.

CCWI - 181 is UL 181 A-M & B-M Listed

Passes ASTM C-731, D-2202 USDA, EPA and FDA Approved. LEED compliant SCAQMD Rule 1168.
City of Los Angeles Approval RR #8427