20 Gauge Duct Fittings | McMaster-Carr

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About Duct Connections

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Round Duct and Fittings

Standard Duct and Fittings

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No need for clamps or connectors—duct and fittings have a male end that is slightly smaller than its female end for simple assembly.

Quick-Disconnect Duct and Fittings

Join duct and fittings with quick-release clamps for faster disassembly and cleanout than other duct systems.

Crush-Resistant Spiral Duct and Fittings

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A spiral seam gives this duct greater strength and rigidity than standard duct.

Sure-Seal Spiral Duct and Fittings

Fittings have gaskets which create a tight seal—you don't need to seal joints with coating or tape.

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)