Sheet Metal Duct Fittings | McMaster-Carr

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Adjustable-Angle Elbow

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Stainless Steel

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Adjustment Sleeve

Downdraft Diverter

Duct with Access Panel

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Aluminum-Zinc Alloy Coated

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1,916 Products

Heating, Ventilation, and Air Conditioning

Duct and Fittings

Duct and Fittings

Circulate air through HVAC systems using round, rectangular, and fabric duct

Duct Damper Handles

Duct Damper Handles

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

Chimney Vent Caps

Chimney Vent Caps

Cover chimneys to reduce downdrafts and block out debris

Chimney Pipe Fittings

Chimney Pipe Fittings

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

Chimney Pipe

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

Chimney Storm Collars

Chimney Storm Collars

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

Chimney Roof Flashings

Chimney Roof Flashings

Prevent leaks where chimneys pass through roofs

Duct Spark Traps

Duct Spark Traps

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

Diffuser Collars

Diffuser Collars

Connect diffusers to duct

Duct Noise Reducers

Duct Noise Reducers

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

Duct Turning Vanes

Duct Turning Vanes

Guide air smoothly around sharp bends in rectangular duct

Duct Downdraft Diverters

Duct Downdraft Diverters

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

Duct Floor Sweeps

Duct Floor Sweeps

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

Duct Access Panels

Duct Access Panels

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

Duct Flow Sights

Duct Flow Sights

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

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

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