Mastic

Mastic

CCWI – 181 mastic is a versatile, all-purpose duct sealant for use on all types of metal duct, glass fiber duct board, flex duct, duct fabric and flexible tubing runouts.

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CCWI – 181 mastic is a versatile, all-purpose duct sealant for use on all types of metal duct, glass fiber duct board, flex duct, duct fabric and flexible tubing runouts. CCWI – 181 integrates a built-in polyester reinforcement for excellent strength, with UV inhibitors for outdoor use.

  • UL 181A-M & UL181B-M Listed
  • Passes ASTM C-731, D-2202 USDA, EPA & FDA
  • Approved LEED compliant SCAQMD Rule 1168
  • City of Los Angeles Approval RR #8427

Product # 304144-HC

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