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DS321C Duct-seal 321 Fiber Reinforced 11 Oz

DUCT-SEAL 321 is an all purpose industrial grade duct sealant for all types of metal duct, glass fiber
duct board, and flex duct, as well as duct fabric and flexible tubing runouts. It includes UV inhibitors for
extended outdoor exposure and built-in fiber reinforcement for added strength. This non-toxic water
based product is solvent free and is suitable for residential use.

Spec Sheet