Duct Fittings | McMaster-Carr

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Adjustable-Angle Elbow

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Stainless Steel

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Adjustable Nozzle with Stand

Adjustment Sleeve

Downdraft Diverter

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Interlocking Bracket

Push to Connect

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Chemical Resistant

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Oval Duct to Standard Duct

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2,232 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

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

Rectangular Duct and Fittings

Rectangular Duct and Fittings

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

Duct Vent Caps

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

Chemical-Resistant Duct and Fittings

Chemical-Resistant Duct and Fittings

Withstand corrosive gases, vapors, and fumes that would eat away at most metal duct

Oval Duct and Fittings

Oval Duct and Fittings

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

Fabric Duct and Fittings

Fabric Duct and Fittings

Evenly distribute air from fans and blowers through large spaces

Vibration-Damping Duct Connectors

Vibration-Damping Duct Connectors

Reduce shaking and noise from fans and blowers

Other Products

Duct Hose Fittings

Duct Hose Fittings

Join lengths of duct hose or connect to your exhaust system

Duct Blast Gates

Duct Blast Gates

Slide open and closed to control flow of air and material

Duct Airflow Dampers

Duct Airflow Dampers

Regulate airflow to sections of duct

Chimney Pipe and Fittings

Chimney Pipe and Fittings

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

Diffuser Collars

Diffuser Collars

Connect diffusers to duct

Duct Hose

Connect to blowers and vacuums to move air, fumes, dust, chips, and liquids

Dust Collectors

Dust Collectors

Extract sawdust, chips, and other particles from the air and contain them for disposal

Duct Turning Vanes

Duct Turning Vanes

Guide air smoothly around sharp bends in rectangular duct

Chutes

Connect to conveyors and other machinery to move items using gravity

Barometric Draft Dampers

Barometric Draft Dampers

Maintain consistent airflow in your furnace to improve its performance

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

Smoke Candles

Light the wick for a short burst of smoke to observe airflow and detect leaks in HVAC systems

Duct Spark Traps

Duct Spark Traps

Reduce the risk of fire by snuffing out sparks before they get into your system

Duct Downdraft Diverters

Duct Downdraft Diverters

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

Duct Flow Sights

Duct Flow Sights

Peek inside duct to monitor airflow and check for buildup and blockages

Duct Floor Sweeps

Duct Floor Sweeps

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

Smoke Pellets

Detect airflow and leaks in HVAC systems near server rooms and other areas with electronics

Smoke Pens

Produce smoke to observe airflow and detect leaks in HVAC systems; reusable, unlike smoke candles

Duct Damper Handles

Duct Damper Handles

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

Duct Fans

Send airflow through or remove exhaust from duct

Expansion Plugs

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

Duct Carriers

Store and transport up to 25 feet of collapsed duct hose

Fog Machines

Produce a continuous fog to observe airflow and detect leaks in HVAC systems

Smoke Powder

No flame needed—release a burst of powder to detect airflow and leaks in HVAC systems

Duct Noise Reducers

Duct Noise Reducers

Muffle noise from high-velocity airflow and fans, blowers, and dust collectors

Duct Crimpers

Create raised edges on sheet metal to join pieces of duct and gutters

Duct Access Panels

Duct Access Panels

Create an entry point for cleaning and inspecting duct; also known as cleanouts

Duct Damper Actuators

Duct Damper Actuators

Automatically adjust duct dampers to regulate airflow

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