Cooling Duct | McMaster-Carr

	Trade Size Trade Size

3
3.5
4
4.5
5
5.5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
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46
48
52

	Shape Shape


Straight	90° Elbow

Cap	Adjustable- Angle Elbow

45° Elbow	Tee

Wye	30° Elbow

	Material Material

	Finish Finish

Galvanized

Neoprene Coated

PVC Coated

	ID ID

	OD OD

	Component Component

	Connection Type Connection Type

Press Fit

Interlocking Bracket

Quick-Disconnect Clamp

Worm-Drive Clamp

	Gauge Gauge

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	End Construction End Construction

	Gender Gender

Female

Male

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Color Color

	Black		Silver
	Yellow		Gray
	White

	Flange Mount Type Flange Mount Type

Screw On

Weld On

	Length Length

	Width Width

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Duct Construction Duct Construction

Closed

Open

	Number of Mounting Holes Number of Mounting Holes

	Maximum Temperature Maximum Temperature

180° F

200° F

250° F

	Cover Material Cover Material

Plastic

Metalized Film

	Flange Thickness Flange Thickness

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1,265 Products

About Duct Connections

Standard Duct and Fittings

No need for clamps or connectors—duct and fittings have a male end that is slightly smaller than its female end for simple assembly.

Crush-Resistant Spiral Duct and Fittings

A spiral seam gives this duct greater strength and rigidity than standard duct.

Quick-Disconnect Duct and Fittings

Join duct and fittings with quick-release clamps for faster disassembly and cleanout than other duct systems.

Sure-Seal Spiral Duct and Fittings

Fittings have gaskets which create a tight seal—you don't need to seal joints with coating or tape.

Chemical-Resistant Duct and Fittings

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

Rectangular Duct and Fittings

Often used in tight spaces, such as in walls and ceilings, rectangular duct allows you to select larger sizes without increasing duct height.

Straight-Run Fabric Duct

Evenly distribute air from fans and blowers throughout large spaces.

Duct Flanges

Bolt flanges to equipment to start a run of duct.

Weld-On Duct Flanges

Weld flanges to equipment to start a run of duct.

Automatic Airflow Dampers

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

Vibration-Damping Duct Connectors

Add a flexible joint to your system to reduce vibration caused by fans and blowers.

Duct Hose and Fittings for Air

Insulated Duct Hose for Indoor Air

Insulated with a layer of fiberglass, this ultra-thin lightweight hose keeps air at a constant temperature.

Insulated Blo-N-Vent Duct Hose with Wear Strip for Air

A layer of fiberglass insulation helps maintain the temperature inside the hose. Use for heating and cooling applications in outdoor environments.