Duct Couplings | McMaster-Carr

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System of Measurement

ID

Duct Size

Shape

Adjustable-Angle Elbow

Material

Stainless Steel

OD

Component

Adjustment Sleeve

Downdraft Diverter

Duct with Access Panel

Flexibility

Fitting Connection

Interlocking Bracket

Quick-Disconnect Clamp

Worm-Drive Clamp

For Use With

Length

Color

Inside Surface Texture

Finish

Aluminum Oxide Coated

Neoprene Coated

Silicone Coated

Maximum Temperature

Less than 250° F

250° F to 499° F

500° F to 749° F

750° F to 999° F

1,000° F or greater

REACH

RoHS

DFARS Specialty Metals

Export Control Classification Number (ECCN)

Gender

Gauge

Clamp Type

Maximum Vacuum @ Temperature

0.01 in. Hg @ 72° F

0.02 in. Hg @ 72° F

0.03 in. Hg @ 72° F

0.05 in. Hg @ 72° F

0.07 in. Hg @ 72° F

0.1 in. Hg @ 72° F

0.2 in. Hg @ 72° F

0.3 in. Hg @ 72° F

0.4 in. Hg @ 72° F

0.5 in. Hg @ 72° F

0.58 in. Hg @ 72° F

0.6 in. Hg @ 72° F

0.7 in. Hg @ 72° F

0.88 in. Hg @ 72° F

1 in. Hg @ 72° F

Bend Radius

End Construction

Duct Profile

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3,012 Products

Duct and Fittings

Spiral Duct and Fittings

Spiral Duct and Fittings

A continuous seam reinforces duct against suction from dust collection systems

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

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

Duct Flanges

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

Chemical-Resistant Duct and Fittings

Chemical-Resistant Duct and Fittings

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

Vibration-Damping Duct Connectors

Vibration-Damping Duct Connectors

Reduce shaking and noise from fans and blowers

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

Rectangular Duct and Fittings

Rectangular Duct and Fittings

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

Oval Duct and Fittings

Oval Duct and Fittings

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

Other Products

Duct Hose

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

Diffuser Collars

Diffuser Collars

Connect diffusers to duct

Duct Airflow Dampers

Duct Airflow Dampers

Regulate airflow to sections of duct

Duct Damper Handles

Duct Damper Handles

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

Duct Downdraft Diverters

Duct Downdraft Diverters

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

Duct Turning Vanes

Duct Turning Vanes

Guide air smoothly around sharp bends in rectangular duct

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

Barometric Draft Dampers

Barometric Draft Dampers

Maintain consistent airflow in your furnace to improve its performance

Duct Floor Sweeps

Duct Floor Sweeps

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

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