Sheet Metal Duct | McMaster-Carr

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Duct Size

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Adjustable-Angle Elbow

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Stainless Steel

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Adjustment Sleeve

Downdraft Diverter

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Blade Material

304 Stainless Steel

Chimney Pipe Size

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1,789 Products

Duct and Fittings

Standard Duct and Fittings

Standard Duct and Fittings

Deliver air for a range of HVAC applications, including exhaust and dust collection

Quick-Disconnect Duct and Fittings

Quick-Disconnect Duct and Fittings

The fastest to disassemble for dust collection and other frequently cleaned systems

Spiral Duct and Fittings

Spiral Duct and Fittings

A continuous seam reinforces duct against suction from dust collection systems

Rectangular Duct and Fittings

Rectangular Duct and Fittings

Maximize the space in close quarters, such as inside walls and ceilings

Duct Flanges

Mount to air handlers and HVAC equipment to start a run of duct

Tight-Seal Spiral Duct and Fittings

Tight-Seal Spiral Duct and Fittings

Gasketed fittings prevent leaks and the seam reinforces duct against suction from dust collection systems

Oval Duct and Fittings

Oval Duct and Fittings

Half the height of rectangular duct to fit into the tightest spaces

Duct Vent Caps

Cover wall and roof vents to prevent cold air and debris from entering your system

Fabric Duct and Fittings

Fabric Duct and Fittings

Evenly distribute air from fans and blowers through large spaces

Other Products

Chimney Vent Caps

Chimney Vent Caps

Cover chimneys to reduce downdrafts and block out debris

Duct Airflow Dampers

Duct Airflow Dampers

Regulate airflow to sections of duct

Barometric Draft Dampers

Barometric Draft Dampers

Maintain consistent airflow in your furnace to improve its performance

Duct Blast Gates

Duct Blast Gates

Slide open and closed to control flow of air and material

Chimney Pipe

Exhaust hot air and fumes from boilers, furnaces, and stoves

Chimney Pipe Fittings

Chimney Pipe Fittings

Form straight, elbow, and tee connections between lengths of chimney pipe

Duct Turning Vanes

Duct Turning Vanes

Guide air smoothly around sharp bends in rectangular duct

Duct Damper Handles

Duct Damper Handles

Replace an existing handle or pair with a blade to create your own damper

Duct Floor Sweeps

Duct Floor Sweeps

Get dust and debris off your floor and into your collection system

Diffuser Dampers

Diffuser Dampers

Regulate the airflow coming out of drop-ceiling diffusers

Duct Fire Dampers

Duct Fire Dampers

Automatically close at high temperatures to help prevent the spread of fire through duct

Duct Downdraft Diverters

Duct Downdraft Diverters

Prevent downdrafts from blowing back into ductwork while allowing air and fumes to vent

Chimney Roof Flashings

Chimney Roof Flashings

Prevent leaks where chimneys pass through roofs

Chimney Storm Collars

Chimney Storm Collars

Pair with chimney roof flashing to prevent leaks where chimneys pass through roofs

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