Volume Dampers | McMaster-Carr

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About Duct Connections

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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

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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.

Chemical-Resistant Duct and Fittings

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

Airflow Dampers

Airflow Dampers

Regulate airflow by adjusting dampers from fully open to fully closed.

Automatic Airflow Dampers

Automatic Airflow Dampers

Save energy and increase comfort by heating and cooling only the areas that need it.

Fire-Rated Airflow Dampers

Fire-Rated Airflow Dampers

In the event of a fire, these dampers automatically stop airflow through duct.

Furnace Draft Dampers

Furnace Draft Dampers

Also known as barometric dampers, these dampers improve furnace performance by automatically opening and closing to maintain consistent airflow despite changing environmental conditions.

Dampers for Drop-Ceiling Diffusers

Dampers for Drop-Ceiling Diffusers

These dampers regulate airflow.

Wall Vent Caps

Sloped Roof Vent Caps

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