Duct Reducers | McMaster-Carr

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207 Products

About Duct Connections

Standard Duct and Fittings

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

Crush-Resistant Spiral Duct and Fittings

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

Quick-Disconnect Duct and Fittings

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

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.

Chemical-Resistant Duct and Fittings

Made of PVC plastic to withstand acids, alkalies, salts, and other corrosive vapors and fumes.

Rectangular Duct and Fittings

Often used in tight spaces, such as in walls and ceilings, rectangular duct allows you to select larger sizes without increasing duct height.

Duct Noise Reducers

These noise reducers mount directly to spiral duct to decrease noise by as much as 50%.

Design-Your-Own Dust Collector Duct System

Use these components to put together a duct system to collect sawdust, chips, shavings, and granular material from woodworking operations.

Duct Hose Connectors

Slide these connectors into the ends of duct hose and secure with a clamp.