Duct Qyes | McMaster-Carr

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	Trade Size Trade Size

	Shape Shape	Show

	Wye

	Shape Shape	Hide


Straight	90° Elbow

Adjustable- Angle Elbow	45° Elbow

Cap	Wye

Tee	30° Elbow

60° Elbow	Offset Elbow

	Material Material

	Finish Finish

Galvanized

PVC Coated

	Connection Type Connection Type


Press Fit	Quick- Disconnect Clamp

Conduit	Electrical Box

	Component Component

Connector

Reducer

Saddle

	System of Measurement System of Measurement

Inch

	ID ID

	Wye Angle Wye Angle

30°

45°

90°

	End Construction End Construction

Rolled

Crimped

Plain

	Gauge Gauge

	OD OD

	Gender Gender

Male

Female

	Outlet OD Outlet OD

	Inlet OD Inlet OD

	Type Type


Adapter	Connector

Reducer

	Color Color

	Gray
	Black

	Conduit Trade Size Conduit Trade Size

	Flexibility Flexibility


Flexible	Rigid

Bend and Stay

	Conduit Connection Type Conduit Connection Type


Push In	Screw Clamp

Snap In

	Conduit Type Conduit Type

EMT

ENT

FMC

	Specifications Met Specifications Met

CSA

	Environment Environment

Damp

Dusty

High-Pressure Washdown

Submersible

Washdown

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99 Products

About Duct Connections

About Conduit

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

Galvanized steel has good corrosion resistance. 304 stainless steel is the most corrosion resistant.

For technical drawings and 3-D models, click on a part number.

90° Wye Connectors

Wye connectors join or split runs of duct.

				Galvanized Steel		304 Stainless Steel
Trade Size	ID	Gauge	End Construction		Each		Each
4	3 7/8"	22	Rolled	00000000	0000000	00000000	0000000
5	4 7/8"	22	Rolled	00000000	000000	00000000	000000
6	5 7/8"	22	Rolled	00000000	000000	00000000	000000
7	6 7/8"	22	Rolled	00000000	000000	00000000	000000
8	7 7/8"	22	Rolled	00000000	000000	00000000	000000
9	8 7/8"	22	Rolled	00000000	000000	00000000	000000
10	9 7/8"	22	Rolled	00000000	000000	00000000	000000
12	12"	22	Rolled	00000000	000000	00000000	000000
14	13 15/16"	20	Rolled	00000000	000000	00000000	000000
16	16"	20	Rolled	00000000	000000	00000000	000000

45° Wye Connectors

Wye connectors join or split runs of duct.

				Galvanized Steel		304 Stainless Steel
Trade Size	ID	Gauge	End Construction		Each		Each
4	3 7/8"	22	Rolled	00000000	0000000	00000000	0000000
5	4 7/8"	22	Rolled	00000000	000000	00000000	000000
6	5 7/8"	22	Rolled	00000000	000000	00000000	000000
7	6 7/8"	22	Rolled	00000000	000000	00000000	000000
8	7 7/8"	22	Rolled	00000000	000000	00000000	000000
9	8 7/8"	22	Rolled	00000000	000000	00000000	000000
10	9 7/8"	22	Rolled	00000000	000000	00000000	000000
12	12"	22	Rolled	00000000	000000	00000000	000000
14	13 15/16"	20	Rolled	00000000	000000	00000000	000000
16	16"	20	Rolled	00000000	000000	00000000	000000

30° Wye Saddles

Saddles add a branch to an existing run of duct. Cut a hole in the duct and fit the saddle over the hole.

				Galvanized Steel		304 Stainless Steel
Trade Size	ID	Gauge	End Construction		Each		Each
6	5 7/8"	22	Rolled	0000000	000000	00000000	0000000
8	5 7/8"	22	Rolled	0000000	00000	00000000	000000
10	5 7/8"	22	Rolled	0000000	00000	00000000	000000
12	5 7/8"	22	Rolled	00000000	00000	00000000	000000

Standard Duct and Fittings

No need for clamps or connectors—duct and fittings press-fit together. Male ends are crimped or tapered, making them slightly smaller than a female end for simple assembly.

Galvanized steel has good corrosion resistance.

For technical drawings and 3-D models, click on a part number.

45° Wye Reducers

Female × Male × Male

Male × Female × Female

Reducers connect duct with different diameters.

Trade Size			Female ID			Male OD					Galvanized Steel
(A)	(B)	(C)	(A)	(B)	(C)	(A)	(B)	(C)	Gauge	End Construction		Each
Female × Male × Male
12	10	10	12"	__	__	__	9 7/8"	9 7/8"	28	Crimped	00000000	000000
14	10	10	14"	__	__	__	9 7/8"	9 7/8"	28	Crimped	00000000	00000
16	12	12	16"	__	__	__	11 7/8"	11 7/8"	26	Crimped	00000000	000000
16	14	14	16"	__	__	__	13 7/8"	13 7/8"	26	Crimped	00000000	000000
Male × Female × Female
4	3	3	__	3"	3"	3 7/8"	__	__	26	Crimped	00000000	00000
5	3	4	__	3"	4"	4 7/8"	__	__	26	Crimped	00000000	00000
5	3	5	__	3"	5"	4 7/8"	__	__	26	Crimped	00000000	00000
6	3	4	__	3"	4"	5 7/8"	__	__	26	Crimped	00000000	00000
6	4	4	__	4"	4"	5 7/8"	__	__	26	Crimped	00000000	00000
6	4	5	__	4"	5"	5 7/8"	__	__	26	Crimped	00000000	00000
7	5	6	__	5"	6"	6 7/8"	__	__	26	Crimped	00000000	00000
8	6	6	__	6"	6"	7 7/8"	__	__	26	Crimped	00000000	00000
10	8	8	__	8"	8"	9 7/8"	__	__	26	Crimped	00000000	00000
12	8	8	__	8"	8"	11 7/8"	__	__	26	Crimped	00000000	00000

Crush-Resistant Spiral Duct and Fittings

A spiral seam makes this duct strong and rigid. Fittings have male ends with a slightly smaller diameter to press-fit into duct.

Galvanized steel has good corrosion resistance. PVC-coated steel combines the strength of steel with the corrosion resistance of plastic.

For technical drawings and 3-D models, click on a part number.

45° Wye Connectors

Wye connectors join or split runs of duct.

				Galvanized Steel		PVC-Coated Steel
Trade Size	Male OD	Gauge	End Construction		Each		Each
3	2 7/8"	24	Plain	00000000	000000	000000	00
4	3 7/8"	24	Plain	00000000	00000	000000	00
5	4 7/8"	24	Plain	00000000	00000	000000	00
6	5 7/8"	24	Plain	00000000	00000	00000000	000000
8	7 7/8"	24	Plain	00000000	00000	00000000	00000
10	9 7/8"	24	Plain	00000000	00000	00000000	000000
12	11 7/8"	24	Plain	00000000	00000	000000	00
14	13 7/8"	24	Plain	00000000	000000	000000	00
16	15 7/8"	24	Plain	00000000	000000	000000	00

45° Wye Reducers

Reducers connect duct with different diameters.

Trade Size			Male OD					PVC-Coated Steel
(A)	(B)	(C)	(A)	(B)	(C)	Gauge	End Construction		Each
6	4	6	5 7/8"	3 7/8"	5 7/8"	24	Plain	00000000	000000
8	6	8	7 7/8"	5 7/8"	7 7/8"	24	Plain	00000000	00000
10	8	10	9 7/8"	7 7/8"	9 7/8"	24	Plain	00000000	000000
12	10	12	11 7/8"	9 7/8"	11 7/8"	24	Plain	00000000	000000

Chemical-Resistant Duct and Fittings

Made of PVC plastic to withstand acids, alkalies, salts, and other corrosive vapors and fumes. Use PVC pipe cement (not included) to secure components. Fittings have female ends with a slightly larger diameter to press-fit over duct.

For technical drawings and 3-D models, click on a part number.

45° Wye Saddles

Saddles add a branch to an existing run of duct. Cut a hole in the duct and fit the saddle over the hole.

Trade Size		Female ID			PVC Plastic
(A)	(B)	(A)	(B)	Color		Each
6	8	6 5/8"	8 5/8"	Gray	00000000	0000000
8	10	8 5/8"	10 3/4"	Gray	00000000	000000
10	12	10 3/4"	12 3/4"	Gray	00000000	000000
12	14	12 3/4"	14"	Gray	00000000	000000

Design-Your-Own Dust Collector Duct System

Use these components (sold separately) to put together a duct system to collect sawdust, chips, shavings, and granular material from woodworking operations. Hose clamps are available.

For maximum safety and to avoid a dangerous buildup of static electricity, you must use the grounding kit (sold separately).

If you need more information on designing and installing a dust collection system, order our book "Dust Collection Basics."

Connectors

Style	Shape	Inlet OD	Outlet OD	Material		Each
C	Wye	3"	3"	Plastic	0000000	00000
C	Wye	4"	4"	Plastic	0000000	00000

Reference Books

Title	No. of Volumes		Each
Dust Collection Basics	1	0000000	00000

Reducers for Thin-Wall (EMT) Steel Conduit

Connect different sizes of thin-wall (EMT) steel conduit. These reducers have screw-clamp ends that tighten around conduit with screws.

For technical drawings and 3-D models, click on a part number.

Conduit Connection
Conduit Trade Size - 1	Conduit Trade Size - 2 and - 3	Conduit Connection Type	Gender	Material	Specifications Met		Each
3/4	1/2	Screw-Clamp	Female	Zinc	UL Listed, C-UL Listed	0000000	00000
1	3/4	Screw-Clamp	Female	Zinc	UL Listed, C-UL Listed	0000000	00000

Reducers for Flexible Plastic Conduit

To connect different sizes of conduit, these reducers have tabs on the ends that snap into grooves in the conduit. They help seal out air and liquid when used with flexible plastic conduit. All meet IP68 for continuous submersion and IP69K for high-pressure, high-temperature washdowns. They withstand vibration, are flame retardant, and resist oil, solvents, and UV light.

For technical drawings and 3-D models, click on a part number.

Wye Reducers

Conduit Connection
Conduit Trade Size - 1	Conduit Trade Size - 2 and - 3	Conduit Connection Type	Gender	Material	Color	Temperature Range, °F	Environmental Rating	Specifications Met		Each
5/16	1/4	Snap-In	Female	Nylon	Black	-40° to 245°	IP68, IP69K	UL 94V0, UL Recognized Component	0000000	000000
3/8	5/16	Snap-In	Female	Nylon	Black	-40° to 245°	IP68, IP69K	UL 94V0, UL Recognized Component	0000000	00000
1/2	3/8	Snap-In	Female	Nylon	Black	-40° to 245°	IP68, IP69K	UL 94V0, UL Recognized Component	0000000	00000
3/4	1/2	Snap-In	Female	Nylon	Black	-40° to 245°	IP68, IP69K	UL 94V0, UL Recognized Component	0000000	00000
1	3/4	Snap-In	Female	Nylon	Black	-40° to 245°	IP68, IP69K	UL 94V0, UL Recognized Component	0000000	00000
1 1/4	1	Snap-In	Female	Nylon	Black	-40° to 245°	IP68, IP69K	UL 94V0, UL Recognized Component	0000000	00000
1 1/2	1 1/4	Snap-In	Female	Nylon	Black	-40° to 245°	IP68, IP69K	UL 94V0, UL Recognized Component	0000000	00000

Connectors for Flexible Plastic Conduit

To join pieces of conduit, these connectors have tabs on the ends that snap into grooves in the conduit. They help seal out air and liquid when used with flexible plastic conduit. All meet IP68 for continuous submersion and IP69K for high-pressure, high-temperature washdowns. They withstand vibration, are flame retardant, and resist oil, solvents, and UV light.

For technical drawings and 3-D models, click on a part number.

Wye Connectors

Conduit Connection
Conduit Trade Size	Conduit Connection Type	Gender	Material	Color	Temperature Range, °F	Environmental Rating	Specifications Met		Each
5/16	Snap-In	Female	Nylon	Black	-40° to 245°	IP68, IP69K	UL 94V0, UL Recognized Component	00000000	000000
3/8	Snap-In	Female	Nylon	Black	-40° to 245°	IP68, IP69K	UL 94V0, UL Recognized Component	0000000	00000

Adapters for Flexible Metal Conduit and Armored Cable

Attach flexible metal conduit and types AC and MC armored cable to a knockout in an outlet box or enclosure. Wye adapters join two pieces of conduit or armored cable to one knockout. The snap-in end has tabs that snap into the knockout without locknuts or tools.

The screw-clamp end tightens around conduit with a screw.

For technical drawings and 3-D models, click on a part number.

Wye Adapters—Zinc

Push-In × Snap-In

Screw-Clamp × Snap-In

Screw-Clamp × Threaded

Conduit Connection		For Armored Cable		Electrical Box Connection
Conduit Trade Size	Gender	OD	Type	Thread Size	Thread Type	For Knockout Trade Size	Gender	Includes	Specifications Met		Each
Push-In Conduit Connection × Snap-In Electrical Box Connection
3/8	Female	0.44"-0.61"	AC, MC	__	__	1/2	Male	__	UL Listed, CSA Certified	0000000	00000
Screw-Clamp Conduit Connection × Snap-In Electrical Box Connection
3/8	Female	0.44"-0.61"	AC, MC	__	__	1/2	Male	__	UL Listed, CSA Certified	0000000	0000
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	0.44"-0.61"	AC, MC	1/2	NPSM	__	Male	Locknut	UL Listed, CSA Certified	0000000	0000

Terms and Conditions and Privacy Policy

About Duct Connections

About Conduit

Quick-Disconnect Duct and Fittings

Standard Duct and Fittings

Crush-Resistant Spiral Duct and Fittings

Chemical-Resistant Duct and Fittings

Design-Your-Own Dust Collector Duct System

Reducers for Thin-Wall (EMT) Steel Conduit

Reducers for Flexible Plastic Conduit

Connectors for Flexible Plastic Conduit

Adapters for Flexible Metal Conduit and Armored Cable