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The Carlisle 321 Duct-Seal is a water-based duct sealant designed for both indoor and outdoor applications. With a container size of one gallon and packaged in a pail, this duct sealant is suitable for various types of metal duct, fiberglass duct board, and flex duct.
Ideal for use in residential settings, this duct sealant provides strong adherence and flexibility. It meets several industry standards for safety and efficiency.
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